S U N C A L L
CORPORATEP R O F I L E

FOR THE WORLD
WITH OUR INNOVATION
Suncall was founded in Arashiyama, Kyoto, a city of tradition and industrial advancement.
Flexible yet tough, traditional yet novel.
The cultural uniqueness of Kyoto echoes through our corporate environment.
Suncall has followed a globally exceptional business model as “an integrated manufacturer,
from raw materials to precisely processed products.” Every process is infused with our technologies.
With core precision plastic forming technology serving as the axis of our business, we have steadily expanded
our scope from automotive parts and materials to hard disks, printers, and communications components.
Suncall constantly explores new and undiscovered areas with original technologies.
By combining the technologies we have built up, we will continue to create products never seen before,
proudly offering unparalleled Suncall quality for a better world.

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01 Introduction

17 Communications-related Products

03 Our Business

18 Measuring instrument-related and Other Products

05 Materials-related Products

19 Research and Development

09 Automotive-related Products

21 CSR Activities

13 Hard Disk Suspension Products

23 Offices in Japan and Abroad

15 Printer-related Products

25 Company Profile and History

Suncall is
all about continuous evolution.
Precision plastic processing technology, which is one of our core technologies,
has been the foundation on which we have established different businesses,
which organically merge to develop into new areas.

Super-precision forming and die-cleaning technology

Managing global big data with extremely small technology

Hard Disk Drive Suspension Business
These small, yet high-precision plate springs support the magnetic heads of hard disk drives,
while enabling positioning to be performed on the order of dozens of nanometers.
We perform every step from design to manufacturing our suspensions using our company’s materials
and precision machining technologies that have been cultivated over many years,
as well as production technology that uses automatic control.

Precision assembly technology

Connecting the lifelines we call “networks”

Communications-related Business
Manufacturing of information infrastructure-related products relies
on our precision processing technologies that do not tolerate eventhe slightest deviations at the micrometer level.
In the seemingly endless pursuit for higher speed broadband,
Suncall contributes to the development, manufacture,and supply of products that cater to new requirements
as part of our market vitalization efforts.

Coating technology & Testing technology

A revolution in inkjet printers

Printer-related Products Business
Suncall’s ceramic-coated rollers for inkjet printers have earned us a dominant positionin the global market for this product.
Our technologies, which have driven the evolution of inkjet printers ever since
their introduction, continue to expand the horizon of the development of
next-generation rollers to support new applications.

Precision plastic processing technology

High-quality products are made from high-precision materials.

Precision processing technology & Design/Testing technology

No compromise - Creating products for the vehicles to which we entrust our lives

Materials-related Business

Automotive-related BusinessOur materials-related business is the main strength of Suncall’s business.
This core segment handles the material production side of our comprehensive production process,starting from raw materials and extending through to finished products.
Centered around “elongation” and “bending,” wiredrawing die development,rolling and heat-treatment technologies are applied to produce wire materials
used in the manufacture of high precision springs mainly utilized in automotive parts.

This is a business in which particularly special attention to safety is necessary.
Parts that make up the main components of automobiles, including engines, transmissions,and safety equipment are manufactured using our company’s comprehensive production methods,
which span from functional materials to machining. Under our strict quality assurance system,
we take on the challenge of delivering products with ever higher precision and quality.

Materials-related Products

Providing reliable quality
using highly precise technology
and know-how
Suncall procures best materials with inclusions controlled
and produces high-performance wires used to make springs
by using a lead-free, fluidized bed type heat treatment line
and automatic washing equipment. Additionally, in order toensure total quality, nondestructive testing is performed using
an inline eddy current tester.

This steel wire in particular is one of Suncall’s cores.

Steel wire for valve springs
The highest level of quality is demanded of steel wirefor valve springs. We use only the best elements in orderto obtain this material, developing the elements incooperation with steel manufacturers to achieve excellent
fatigue strength. Also, special care is taken to the small
scratches during material processing which have an
impact on valve spring quality, while shaving and flaw
detection are utilized to ensure material quality. Steelwire that passes these processes is then used as steel
wire for valve springs. Both shaped cross-section materials
and high-tension strength steels are available, with efforts
being made to develop even higher strength new materials.

Our advanced functional material responsible
for numerous production innovations.

Precision shaped wireThis functional material is manufactured using ourcompany’s core technologies - die design and shaped
wire drawing/rolling methods. Burrs are not generated
during this method, which enables wire drawing androlling without manufacturing losses. Also, by combining
our in-house designed dies and grooved rolls withprocessing technology, it is possible to obtain an item witha shape and corner extremely close to that of the final
product. By cutting the shaped cross-section material,
it is possible to mass-produce products of the exactly same
shape. Materials with such high levels of precision canbe used for rings, press formed parts, and materials
for spiral springs, etc., regardless of whether they are
produced in-house or externally.

Automotive-related Products

A ceaseless challenge to develop better products
Drawing on the strengths of our company’sfunctional materials to machining, we undertakea c h i eve i m p r ove m e n t s i n e nv i r o n m e n t a lcomprehensive production methods, which span frommaterials and product development tofriendliness, fuel consumption and, of course, safety.

Investing everything to reach the height of spring making.

Superior drive plates from superior drive ring gears.

Valve springs

Drive platesSuncall produces high-strength springs used for engine
intake and exhaust valves. No fatigue failure should
occur over 100 million cycles - that is the absolute
requirement for valve springs, which makes them
top-grade springs. In order to maintain this quality,
Suncall invested original techniques and know-how
into every process throughout its extraordinary systemthat produces valve springs from raw materials with asingle production line. Our dedication to quality materials
and machining has enabled us to accommodate therigorous demands of engines, which increasingly
require better output and fuel efficiency.

These products use advanced welding technology to integrate
our company’s ring gears with plates. They operate totransmit torque from the engine to the transmission. The
drive plates rotate as long as the engine is running, forwhich high durability and highly precise weight balance
are required. In order for this, quality assurance is ensured(such as for balance) by way of total inspections performed
using our company’s uniquely developed inspection devices.
Superior functionality is achieved even for durability
evaluations.

Fewer processes and higher quality
through precision shaped materials.

Integrated with Suncall’s core technologies.

Valve cotters

Ring gears

This product is used to secure engine intake-exhaust
valves and spring bearings in severe operating environments.
Two valve cotters are mounted to each valve and are usedin various types of engines, such as those for automobiles,
motorcycles and boats, in which precision and strength
are required to ensure that the engines themselvesconform to respective regulations. We cut precision
shaped materials into approximate shapes using a press,
and because machining is made unnecessary, are able
to realize improved quality, stability and high levels of
productivity.

Rings with extremely circular shapes processed with
precision shaped materials using our unique technology
are processed into gears. These are important parts
which are used for engine starter gears. Various types ofgear cutting to suit customer applications and needs areavailable, including helical machining for smooth andquiet engine starts, as well as chamfering for smoothgear meshing. Our company maintains a supply andbackup network of production bases around the globe.

Engine parts

Transmission parts

Drive parts

Our company’s unique patented manufacturing methodthat meets the needs of our generation.

Increased safety and comfort
using technology cultivated for valve springs.

Material loss is prevented andprocesses are reduced by utilizing our core technologies.

Featuring small gaps and large power.

Difficult-to-manufacture thin plates
made to specification.

Providing the superior levels of work efficiency andsealing required for automobiles.

Spiral springs for variable valve timing system

Transmission springs

Shaped rings (snap rings)

Wave rings/wave springs

Accordion springs

Boot clamps

These are used for the intake-exhaust variable valve
timing mechanisms of 4-cycle reciprocating engines.
Although helical torsion springs have been usedconventionally, with the need to create more compact
engines, these have been switched to space-saving
spiral springs which are able to provide high levels of
torque. In order to achieve the functionality required ofthese springs, production is performed using ourunique patented manufacturing process.

Our company produces various high strength springs foruse in automatic transmissions, such as damper springs,
return springs, and accumulator springs. Here, we haveapplied our company’s technology cultivated throughour development of valve springs to provide drivers
with enhanced safety and comfortability. We have also
succeeded in making spring heights more compact
through precision shaped material processing of both solid
copper wire and oval-shaped cross-sections, which inturn contribute to making transmissions more compact.

Our shaped materials for bending processes feature ourunique coiling technology which can be used for processing
ring shapes with extremely high levels of circularity. Thanks
to this, the production of rings is possible in which material
loss levels are much lower than that of when press-punch
processing for sheet materials is used. Both ends of the ringcan be simultaneously shaped as desired and, since burr
removal is not required, processes can be reduced. Shapedrings produced in this manner can be used as snap rings or
spacers for spring retention in transmissions or bearings.

These feature the stress of a large spring in only asmall space. By switching out disc springs for wave
springs, a higher load can be achieved, yet with thesame height. And, by switching out multi-row springs
for wave springs, a load equal to or higher than that ofmulti-row springs can be achieved. Furthermore,because coiling is performed using shaped materials,
material losses can be drastically reduced.

These bellows-shaped springs are used in various types
of automobiles as parts for automatic transmissions. Highly
elastic thin plates formed from difficult-to-machine 0.05 mm
plates can be manufactured with stability into complex
shapes using our company’s unique forming die layouts.
While manufacturing according to the exact designs ofcustomers is possible, we can also provide original designs
that take stress mitigating treatments into consideration
to match specifications.

These are used in automobile constant velocity joints.
Special tools are not required for installation. Fastening
with high levels of sealing can be performed just bypulling with a simple jig, enabling work times to besignificantly shortened. Sizes can be easily adjusted
during manufacturing.

Automotive-related Products

Safety parts

Motor and electric parts

Technology that makes seatbelts more comfortable.

Excellent torque adjustment for more comfortable seatbelts.

Shapes can be designed to suit wiring.
Allowing wiring to be the main focus.

A bus bar integrated sensor unlike any
that has ever existed.

Spiral springs for seatbelts

Tension reducers

Bus bars

Shunt on Bus Bars

Although seatbelts are a necessary item for
automobiles, we want to eliminate any discomfort thatcomes with wearing them. In order to achieve this, it isnecessary for load to be distributed evenly along theentire length of the seatbelt. Manufacturing of ourcompany’s spiral springs for seatbelt retractors starts
with materials. Because of this, precise torqueadjustments are performed starting with materials toenable enhanced comfort when seatbelts are worn.

It features a mechanism in which the large spiral
spring operates when the seatbelt is retracted and thesmall spiral spring operates when the seatbelt isworn, lessening the feeling of pressure felt by users
when wearing seatbelts and enabling the use of these
reducers in luxury automobiles. Our company’s
product is compact and can be stored the same asnormal retractors.

Suncall bus bars are individually designed to match
unit shapes. By using various processing technologies,
mainly forming processing in which dies are not necessary,
we are able to provide optimal bus bars. We offer
aluminum material bus bars that more lightweightand cheaper than copper ones. Furthermore, insulation
coatings, including fire-resistant coatings, are also available.

This bus bar integrated sensor includes a function thatmeasures voltage while electricity is flowing. Highly
precise detection is possible, from low currents tolarge currents such as those of lithium ion batteries.
Contributes to space saving as the current detector isembedded into a portion of the bus bar, which isnecessary for connecting.

Clean production processes in which even dust is controlled.

This technology activates during sudden stops.

Parts with driving comfort and safety built in.

Featuring electrodeposition coatingthat boasts superior voltage endurance properties.

Automating troublesome motor wiring work.

Supplying next-generation motor coreswith high levels of productivity.

ECU control parts

Sensor rings

Detent springs

Reactor coils

Bus rings (patent pending)Motor cores/stator cores

These are used in ESC products for automobiles as
backflow prevention valves for controlling hydraulicpressure and pneumatic pressure. Because these are
precision parts in which even the intrusion of fine dust
is not permitted, they are assembled in ISO Class 5 clean
rooms and each product undergoes both external
appearance and functional inspections. These are
performed in a comprehensive manner on our automatedcontinuous line. Also, measurement software designed byour company is used for total inspections to perform
each highly precise inspection. By using our company’s
precision shaped materials for components, we canprovide solutions that significantly shorten processes.

This product is installed on the rotating axis and transmits
the rotation status to the sensor using the concave andconvex portions of the gear. It is employed in many automobile
ABS systems (anti-lock brake systems). We use press,
forging, and cutting processes to manufacture thin gears
for which ensuring circularity and flatness can be difficult.
In addition to slanted gear shapes, complex shapes andgear cutting at various positions are possible, and weare also able to provide various proposals to meetcustomer conditions.

These plate springs are used for range switching in AT
vehicle transmissions. By using a needle bearing toachieve optimal load, smooth and precise range switching
can be realized. Our company utilizes a comprehensive
production process, including everything from die design
to bearing assembly. Furthermore, because this productis a part from which safety is demanded, load is measured
and strictly controlled using automated inline total
inspection devices.

Because our reactor coils undergo electrodeposition
coating after coiling, the insulating layer is uniform,
meaning that processing damage does not occur easily
and superior voltage endurance can be obtained. Also,
by using shaped materials, the adherence height ofcoils is lower than that of solid copper wires in the samecross-sectional area, resulting in a more compact size.

Manual motor coil wiring work can now be automatedthanks to our new bus rings. Using Suncall’s uniqueplastic processing technology, forming is performed
using one rectangular copper wire, resulting in press
dies no longer being necessary and yielding significant
cost reductions. Also, installation space is kept to aminimum, contributing to more compact motors.

The parts that form the cores of motors, including
motor cores and stator cores, are formed using
multiple layers of thin plates with thicknesses ofapproximately 0.5 mm respectively and by employing
production technology in which flatness and parallelism
are emphasized. We employ an automated comprehensive
production process that starts with press machining andincludes shaft press-fitting, polishing and cleaning,
and which realizes high levels of productivity.

General-purpose spring parts
One-touch connectorsthat significantly shorten inspection time.

Inspection pins for wire harnesses
Tip shapes made to match with terminal shapes andsizes contribute to significant improvement in
inspection work efficiency. Probe durability andserviceability are also improved.

Heat-resistant springs

Small springs

Press parts

Highly heat-resistant and difficult-to-process
NIMONIC90 and SUS631J1-WPC materials are used.
These springs are also used for ship compressors, etc.

We manufacture various types of springs, including
compression springs, torsion springs, and tension
springs. These springs can be used for various
applications such as automobile door locks andelectronic control parts.

We provide comprehensive services, from die design
and manufacturing to production processes. We also
provide proposals for part shapes and functional testing.

Suncall is dedicated tocontinued development of
new products.

Hard Disk Suspension Products

Small parts formed
with a variety of unique technologies
Hard disk suspensions are industrial products that require an extreme level of precision.
Suncall performs in-house design of the parts most important for manufacturing, including molds
and jigs, while using our unique micro-machining technology for the manufacture.

1/10 g load precision control
The magnetic head of the hard disk drive is maintained at a height of 0.00001 mm or less from the rotating disk by balancing
the air pressure produced by high-speed rotation and the load of the plate spring. This is comparable to maintaining theheight of a passenger plane flying at top speed at 0.6 mm above ground. Suncall can provide fine load control with a precisionof 1/10 g by using precision sheet forming and precision heat treatment technologies.

1/100-mm level
metal sheet forming
Suncall bends, draws, and cuts metal sheets witha thickness of 0.01 to 0.03 mm. This processing
can be done while preventing wrinkles from being
formed on the surface.

0.5° or less fine angle control
Suncall can control the angle of the magnetic headbonding surface at 0.5° or less using precision sheet
forming and laser bending technologies.

Precision mounting technology
for minuscule chips
with a size of 1 mm or smaller

1/1,000-mm level
precision vibration control

Suncall has technologies that support precision application of
conductive and insulating adhesives, as well as chip insertion.
These technologies enable the mounting of minuscule chips
with a size of 1 mm or smaller on complex metal structures witha positional precision of a few micrometers while ensuring bothelectrical and mechanical bonding.

The magnetic head moves at high speed to the data position
to be required from among data aligned at 0.00006 mm
intervals. The level of precision required for this is equivalent
to hitting a ball to a 0.17 mm diameter target on the back wallat the center field from the home plate in Tokyo Dome.
Because even the slightest vibration can affect thismovement, Suncall manages the 3D profile of the suspension
with a precision of 1/1,000 mm to control various vibrations.

＊：1 micrometer (micron) = 1/1,000 millimeters

Parts that contain numerous advanced technologies of only millimeters in size

DSA suspension for HDD (DAIKAKU)
In order to make high-speed magnetic head positioning more precise andimprove the recording density of hard disk drives, minute actuators that use
piezoelectric elements have been built into DAIKAKU.

Fine welding with a spot diameter of 0.1 mm
Metal sheets with a thickness of 0.02 to 0.03 mm can be welded together using laser
with a spot diameter of 0.1 to 0.2 mm. Both laser control technology and precision welding tools
to securely hold the sheets are required to stably weld together sheets while keeping them closely attached.

A next-generation suspension
featuring improved shock resistance and resonance characteristics.

Highly shock-resistant suspension for HDD (SUNKIWI)SUNKIWI’s newly designed weight balance mechanism is effective inpreventing the magnetic head from jumping when shocks are applied.

Printer-related Products

Suncall’s technical prowess
and advanced solutions
open possibilities for printers
Our company is the only manufacturer which can supply three types of ceramic-coated shafts(solid shafts for business machines, resin-coated TUBE shafts, TUBE shafts).
The technology that enables the creation of such long, lightweightand highly-precise shafts can also be widely used for applications other than rollers.

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Shafts that enable photograph printing at home.

These are newly developed shafts
for making printers more lightweight.

Next-generation shafts with high-precision andlightweight properties that enable their use
for a wide range of applications other than printers.

Shafts for business machines

Resin-coated TUBE shafts

TUBE shafts

Printer image quality is affected by the accuracy of paper
feeds. Early printers that fed paper using rubber rollers
were plagued by unstable paper feeds that caused printing
irregularities to stand out. In response, our company started
manufacturing solid metal shafts using our unique materials
processing technology that can limit warping to micronlevels. On the surfaces of these shafts we applied ouroriginal coating which includes ceramic grains to help
realize more accurate paper feeds. High-quality photographprinting for home use and for business use up to A0 insize is possible.

It was our goal to create paper-feed rollers that were more
lightweight and lower in cost. This is a product that meets
those requirements. By covering steel tubing with a resin
layer, the shafts are made to be more lightweight, enabling
their use with low-power motors. Costs are also reduced
by eliminating the need for plating to protect against rust.
Although warping accuracy and diametral accuracy are
not at the same levels as that of solid tubes, they provide
stable paper-feeding thanks to a ceramic-grain coating.
They contribute to the increased popularity of reasonably
priced printers that print up to A3 sized paper.

We have succeeded in the difficult task of developing
shafts that are lightweight and with superior levels of
paper-feeding precision. The result of our efforts was
TUBE shafts with high levels of warping accuracy anddiametral accuracy next to that only of solid shafts.
Thanks to their ceramic-grain coating, printing of beautiful
photographs for home use and for business use up to A1
in size is possible. Also, they can be employed for a wide
range of applications other than printers using various
processing technologies such as terminal processing,
stepped processing, and bending.

Beautiful printing from beautiful shafts.

Small parts eliminate the annoying
double-feeding of paper.

Stable torque transmission andnoise repulsion using shaped materials.

Carriage guide shafts

Torque limiters

Clutches for business machines

We have succeeded in the difficult task of developing
shafts that are lightweight and with superior levels of
paper-feeding precision. The result of our efforts was
TUBE shafts with high levels of warping accuracy anddiametral accuracy next to that only of solid shafts. Thanks
to their ceramic-grain coating, printing of beautiful
photographs for home use and for business use up to
A1 in size is possible. Also, they can be employed for awide range of applications other than printers using
various processing technologies such as terminal
processing, stepped processing, and bending.

Using clutch technology for business machines, we’vedeveloped a new paper feed separation mechanism. It
features a mechanism in which rotation occurs if torqueabove a certain level is added to apply a brake when torqueis weakened due to double-feeding of paper. It is used toprevent double-feeding of paper in printers and copiers
and achieves high levels of paper separation. We can provide
comprehensive production, from torque value design to the
manufacture of springs and assembly of products.

A product in which springs are manufactured using
in-house produced shaped materials (rectangular wire)
and assembled with resin parts. By using rectangularwire, not only can space-saving be realized, but significant
contributions to stable torque transmission and noise
repulsion can be made. Also, by changing spring
specifications, torque adjustments can be made andusage for a wide variety of applications other thanpaper-feeds is possible. By using our in-house produced
shaped materials (rectangular wire), usage is possible fortiming mechanisms and ON/OFF mechanisms used for a
pickup in the paper-feed unit in printers, etc.

Small springs

Press parts

We manufacture various types of springs, including
compression springs, torsion springs, and tension
springs. These springs can be used for various applications
such as automobile door locks and electronic control parts.

We provide comprehensive services, from die design
and manufacturing to production processes. We also
provide proposals for part shapes and functional testing.

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Communications-related Products

Measuring instrument-related and Other Products

Proprietary production andsupply systems for competingin the global market
Suncall develops, manufactures, and supplies optical connectors
for information communications applications with in-house processes.
We deliver high-quality and competitive products to the North Americanand Asian markets, as well as other global destinations.
We are equipped with production and supply systems that allow us
to compete strongly in the global market.

Connectors and adapters for optical communications

Playing an important role in maintaining quality
and improving productivity.

One-touch connectors thatsignificantly shorten inspection time.

Order-made according to inspection targets.

Probes

Inspection pins for wire harnesses

Unit assemblies for inspections

Our probes are designed based upon inspection targets toensure contact with contact points, with various ingenuity
being employed in regards to shapes and materials. For
example, in the case of high-speed testing of ceramic chipcapacitors in which high levels of friction resistance are
required, we offer ultra-hard probes made from ultra-hardalloys. By optimizing contact points, increased probe durability
and improvements in productivity can be achieved.

These are probe pins for wire harnesses. Because we canprovide proposals regarding tip shapes based on terminal
shapes and sizes, inspection work efficiency can be greatly
enhanced. Probe durability and serviceability are also
improved. Pin types, such as conduction pins and switch
pins, etc., can be selected to match the purpose of
inspections. Terminals for connecting with inspection
devices are also available.

This is a unit component that further increases theefficiency in inspection using a probe. The interface
corresponding to IC testers can be used to performsettings for probe configuration and board thickness,
etc., according to inspection targets. Also, pin bases
can be designed and manufactured to enable probe
contact during inspections of board connector
terminals. Individual probes can be replaced easily.

Various types are available, including standard types and uniquely designed
products, and comprehensive production processes are provided, to processing
and assembly from the design of resin dies for housings. We provide support
for the ever-expanding optical communications network.

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Research and Development

Anticipating the future,
expanding into unknown territories <R&D>
Changes in society create new challenges. Suncall, which provides solutions through technology,
welcomes these challenges and looks forward to its expansion into these unknown territories.

【Medical care】

Supporting healthy lives through technology
Japan is a country that faces an aging society unlike any the world has ever seen. Due to this, the desires to preserve lifelong health are
only expected to increase. With this in mind, Suncall is now taking part in joint development with universities to create a rehabilitation
robot named “Ortho-bot” that assists patients who have suffered from cerebral strokes. Suncall is taking its first steps towards plans forthis technology to be introduced into the medical and care fields.

【Advanced “bamboo charcoal” materials】

Bamboo charcoal - A revolutionary method of dealing
with bamboo tree proliferation
Bamboo charcoal, normally non-uniform in quality due to being produced manually and unstable in terms of production quantity, is now
able to be produced in a stable manner that ensures uniform quality levels. Because high-temperature steam is used for its production,
only low levels of CO2 are emitted, and carbonization can be completed in approximately 40 minutes. Materials are supplied from neglectedbamboo forests in Miyazu City in Kyoto Prefecture, a place in which bamboo tree proliferation has been a problem, and their removal has
contributed to the preservation of local forests. Converting bamboo charcoal into activated charcoal enables its use as a deodorant anddevelopments are underway for it’s use in applications such as in capacitors.

A true Kyoto brand that uses Kyoto-made bamboo.
Developing technologies to overcome the barriers caused by disability

Rehabilitation robot “Ortho-bot”
This rehabilitation support robot was designed as part of joint development effort with Group 2 of Kyoto
University’s COI (Center of Innovation) base, in which our company participates, with the objective of improving
the walking functions of patients who have suffered hemiplegia following a cerebral stroke. Just by installing
this device to walking aids (knee ankle foot orthosis) used during everyday walking rehabilitation to preventthe collapse of paralyzed knees, it immediately becomes a walking-assisting robot. No special tools are necessary
for installation, which can be completed within one minute. When installed, the motor provides the appropriate
level of assistance during rehabilitation, inducing a natural walking manner and supporting the wearer toregain walking functions.

Bamboo charcoal
As opposed to imported bamboo charcoal that is produced by burning
trees, our bamboo charcoal is produced without burning by instead
using superheated steam. Because of that, almost no CO2 (carbon
dioxide) is given off. This is an industrial product manufactured via
machine control, enabling the stable production of powder that is 10
microns in size or less. Our company is working towards thecommercialization of two brands; one is the “Kyo-kaguyasumi” brandfor general consumer use, with the other being the “Kyo-BAMBLACK”
brand for industrial use.

CSR Activities

We, at Suncall, aim to be a good neighboras corporate citizens.
Suncall is engaged in diverse activities, both in-house and outside of the company,
to fulfill our corporate social responsibility (CSR) based on our corporate philosophy.
We will continue to promote our environmental and communal effortson the basis of one of our fundamental principles: To be a good neighbor to the community.

Suncall is participatingin the Takesumi (bamboo charcoal) Project,which contributes to the reduction of CO2 emissions.
The bamboo resource utilization project in the city of Miyazu has succeeded in mass production of
charcoal materials using a steam superheater developed by Suncall. The capability to produce
charcoal without burning,i.e. using high-temperature steam, enables clean production which
contributes to the reduction of CO2 emissions. This effort has been adopted as a model case(Miyazu) for regional revitalization by Japan’s Cabinet Office.

Suncall adopts an environmentallyfriendly washing facility
Suncall adopts a washing facility that takes into consideration the surrounding environment—
including workers—in the fully automatic pickling line for washing the surface of various steel
wires used in making automotive parts, electronics and information technology components. In
this way, Suncall is dedicated to improving the working environment.

A mutually beneficial relationship with the region
A mutually beneficial relationship with the region Relationships between businesses and the districts inwhich they are located are changing rapidly. Corporations are expected not just to contribute to regional
development, but also to cultivate harmonious and mutually beneficial relationships with their communities.
Suncall conducts its business activities as a contributing member of local society. Moreover, ourenvironmental objectives embrace "business activities that earn the trust of the community andadvance environmental conservation in the region."

Participating in cleaning/
beautification activities of the community
Working with Communities on Environmental Problems At Suncall, we promote dealing withenvironmental problems in and around its locations. One example of this is our participation in the“Beautify Omuro and Tenjin Rivers Council,” consisting the companies and other organizations
doing business along the Omuro and Tenjin rivers which flow through Kyoto Ukyo-ku’s urban andother districts. Over the course of the almost thirty years since its constitution in 1978, the council has
implemented water quality inspections and environmental “patrols” around the area. The water
quality has continued to improve since these inspections were begun, and fish, ducks, and otherwildlife can now be seen swimming in or spending time around the water.

Suncall volunteers at Gion Festival
Suncall participates in one of the major festivals in Kyoto, the Gion Festival, by providing volunteer
staff every year.

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O ffices in Japan and Abroad

SUNCALL (Tianjin) Co.,Ltd.
SUNCALL AMERICA INC.
Automotive Division of Indiana

SUNCALL (Guangzhou) CO.,LTD.
Suncall (Guangzhou) Trading Co.,Ltd.
Head Plant
Nishi-Nihon Branch
Kinki Sales Office
Global Business Department
Nishi-Nihon
Sales Office

Ueda Sales OfficeSouth Kyoto Plant

SUNCALL AMERICA INC.
Fiber Optics Division

SUNCALL TECHNOLOGYVIETNAM CO., LTD.

Kita-Kanto Sales Office

SUNCALL Kikuchi Corporation

SUNCALL AMERICA INC.
Dallas Office

SUNCALL Engineering Corporation
SUNCALL
CO., (H.K.) LTD.

Tokyo BranchTokyo Sales OfficeHamamatsu
Sales Office
Toyota Plant
Nagoya Branch
Nagoya Sales Office

Suncall Technologies(SZ) Co.,Ltd.

Hirose Plant

SUNCALL HIGH PRECISION(THAILAND) LTD.

Offices in Japan
Headquarters
14, Umezunishiura-cho, Ukyo-ku, Kyoto 615-8555, Japan
TEL: +81(75)881-8111 FAX: +81(75)881-4445
PlantsHead Plant
14, Umezunishiura-cho, Ukyo-ku, Kyoto 615-8555, Japan
TEL: +81(75)881-8111 FAX: +81(75)881-4445
Materials-related Business, Automotive-related Business, Hard Disk Drive Suspension Business,
Printer-related Products Business, Communications-related Business, Measurement machine-related Business
South Kyoto Plant
19-1, Kisshoin Shinden Ninodan-cho, Minami-ku, Kyoto 601-8317, Japan
TEL: +81(75)693-8611 FAX: +81(75)693-8622
Shunt busbar and Busbar Integrated Sensor for Battery Management System BusinessToyota Plant
4-1, Sanken-cho, Toyota, Aichi 471-0037, Japan
TEL: +81(565)32-7749 FAX: +81(565)35-0341
Automotive-related Business
Hirose Plant
635-20, Komugyo, Nishi-Hirose-cho, Toyota, Aichi 470-0309, Japan
TEL: +81(565)45-9777 FAX: +81(565)45-9873
Automotive-related Business
Domestic Subsidiaries
SUNCALL Engineering Corporation
970 Toda, Minami-Alps, Yamanashi 400-0414, Japan
TEL: +81(55)284-2981 FAX: +81(55)284-2980
Automotive-related Business, Electrical parts related
SUNCALL Kikuchi Corporation1950 Akahoshi, Kikuchi, Kumamoto 861-1311, Japan
TEL: +81(968)25-1105 FAX: +81(968)25-1107
Automotive-related Business, Electrical parts related

SUNCALL TECHNOLOGIESMEXICO,S.A.DE C.V.

Offices abroad
Offices

Overseas Subsidiaries

Tokyo Branch
9F, Shin-Yokohama 3rd Tosho Bldg. 3-9-5 Shin-Yokohama, Yokohama
Kohoku-ku,Kanagawa 222-0033, Japan
TEL: +81(45)475-1181 FAX: +81(45)475-1188

SUNCALL AMERICA INC. Fiber Optics Division
150W Phillips Road, Greer, South Carolina 29650, U.S.A.
TEL +1-864-329-1130 FAX +1-864-329-1131
Communications-related Business

Suncall (Guangzhou) Trading Co., Ltd. (Sales office)NO.6 Checheng Road Auto City Huadu District Guangzhou City China 510800
TEL +86-020-8673-3858 FAX +86-020-8673-3857
Materials-related Business

SUNCALL AMERICA INC. Dallas Office (Sales office)2812 Trinity Square Dr. Suite 110 Carrollton, Texas 75006 U.S.A.
TEL +1-469-445-1131 FAX +1-469-445-1132
Communications-related Business

SUNCALL CO., (H.K.) LTD. (Sales office)Unit 805-806, Billinton Trade Centre, 31 Hung To Road, Kwun Tong, Kowioon, HK
TEL +852-2317-0245 FAX +852-2956-0660
Printer-related Products Business, Communications-related Business

SUNCALL AMERICA INC. Automotive Division of Indiana
505 Industrial Parkway, Richmond, Indiana 47374, U.S.A.
TEL +1-765-966-9656 FAX +1-765-966-8684
Automotive-related Business

Suncall Technologies (SZ) Co., Ltd.
Building 4, Hongbang Technology Park, No.30, Cuibao Road,
Baolong Street, Longgang District, Shenzhen, China
TEL +86-755-2870-6720 FAX +86-755-2870-0795
Printer-related Products Business, Communications-related Business

Nagoya Branch
4-1, Sanken-cho, Toyota, Aichi 471-0037, Japan
TEL: +81(565)32-2636 FAX: +81(565)32-2666
Nishi-Nihon Branch
14, Umezunishiura-cho, Ukyo-ku, Kyoto 615-8555, Japan
TEL: +81(75)881-8121 FAX: +81(75)881-4445
Global Business Department
14, Umezunishiura-cho, Ukyo-ku, Kyoto 615-8555, Japan
TEL: +81(75)881-8123 FAX: +81(75)881-4445
Tokyo Sales Office
9F,Shin-Yokohama 3rd Tousho Bldg,3-9-5 Shin-Yokohama,Yokohama
Kohoku-ku,Kanagawa 222-0033,Japan
TEL: +81(45)475-1181 FAX: +81(45)475-1188
Ueda Sales Office
5F, TOKIDA Bldg. 2-20-26 Tokida Ueda, Nagano 368-0018, Japan
TEL: +81(268)28-8351 FAX: +81(26)28-8376
Kita-Kanto Sales Office
6F, Akane Bldg. 3-1-9 Higashishukugo, Utsunomiya, Tochigi 321-0953, Japan
TEL: +81(28)638-4880 FAX: +81(28)638-5012
Nagoya Sales Office
4-1,Sanken-cho,Toyota,Aichi 475-0037,Japan
TEL: +81(565)32-2636 FAX: +81(565)32-2666
Hamamatsu Sales Office
8F, Taiju-Seimei Hamamatsu Bldg. 145-1 Tokiwa-cho, Naka-ku
Hamamatsu,Shizuoka 430-0917, Japan
TEL: +81(53)451-5670 FAX: +81(53)451-5676

SUNCALL TECHNOLOGIES MEXICO, S.A. DE C.V.
Circuito Cerezos Sur No.106, Parque Industrial San FranciscoIV,
San Francisco De Los Romo, Aguascalientes, Mexico C.P. 203 55
TEL +52-449-922-3750
Materials-related Business, Automotive-related Business
SUNCALL (Tianjin) Co., Ltd.
No.78 TaiHua Road development District Tianjin City China 300457
TEL +86-022-59901955
Automotive-related Business
SUNCALL (Guangzhou) CO., LTD.
NO.6 Checheng Road Auto City Huadu District Guangzhou City China 510800
TEL +86-020-8673-3858 FAX +86-020-8673-3857
Automotive-related Business

SUNCALL TECHNOLOGY VIETNAM CO., LTD.
Plot H-1, Thang Long Industrial Park, Vong La Commune,
Dong Anh Dist., Hanoi, Vietnam
TEL +84-24-3951-6372 FAX +84-24-3951-6374
Printer-related Products Business
SUNCALL HIGH PRECISION (THAILAND) LTD.
700/477 Moo 7 Tambol Donhualaw, Amphur Muangchonburi, Chonburi
Province 20000 Thailand
TEL +66-38-454-063 FAX +66-38-454-065
Automotive-related Business, Printer-related Products Business

Kinki Sales Office
14, Umezunishiura-cho, Ukyo-ku, Kyoto 615-8555, Japan
Tel: +81(75)881-8121 Fax: +81(75)881-4445
Nishi-Nihon Sales Office
8F, Royal Tower. 1-1 Inari-machi, Hiroshima Minami-ku, Hiroshima 732-0827, Japan
TEL: +81(82)568-5917 FAX: +81(82)568-5918

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Company Profi le and History

OutlineApr 4, 2022

History

Company Name

SUNCALL CORPORATION

Headquarters

14, Umezunishiura-cho, Ukyo-ku, Kyoto 615-8555, JapanFoundedJune 1943

Common Stock

4,808 million yen

Share listing

Tokyo Securities Exchange, Prime Market

Oct. 1964 Listed on the second sections of Osaka Stock Exchange and Kyoto Stock Exchange.

Settling Day

March, 31

Oct. 1967 Established TOYOTA Plant to boost spring production.

Number of Employees

Unconsolidated: 632 (Consolidated: 2,280) *As of March 31, 2022

Line of Business

Manufacture and distribution of automotive parts and materials,Hard disk-related parts,
Printer-related products,Communications-related products

Offices in Japan

Kyoto (Headquarters), Aichi, Kanagawa, Tochigi, Nagano, Shizuoka,
Hiroshima, Yamanashi, Kumamoto

Offices abroad

U.S., Mexico, China, Hong Kong, Vietnam, Thailand

Jun. 1943 Established the company under the name of SANKO SENZAI KOGYO CO., LTD. in Kyoto for the purpose of manufacturinghigh-grade steel materials for aircraft engine valve springs. (Capital: 1,700,000 JPY)
Jul. 1945 Merged with Nissen Kogyo Co., Ltd. (Capital: 750,000 JPY).
Jun. 1952 Started the delivery of valve springs for automobile engines to Toyota Motor Corporationand several other manufacturers.
Jun. 1953 Succeeded in the commercial production of bead wires for automobiles.

Dec. 1972 Established SUNCALL SENDAI CORPORATION in Sendai, Miyagi.
Feb. 1974 Established subsidiary company, SUNCALL KIKUCHI CORP.
Feb. 1981 Established subsidiary company, SUNCALL ENGINEERING CORP.
Mar. 1984 Started the production of probes for electronic circuit inspection equipment upon capital investment.
Dec. 1985 Started the production of suspensions for hard disk drives upon capital investment.
May. 1989 Established subsidiary company, SANKO PETERSON CORP. as joint company in U.S.A.
Jun. 1989 Established joint company SANKO PETERSON CORP. in the U.S.
Nov. 1989 Constructed Hirose Plant in Toyota, Aichi.
Jan. 1990 Purchased SWISS-TORONICS, INC. (Massachusetts, U.S.) as a subsidiary of SUNCALL SANKO CORP.
Apr. 1991 Changed the company name to SUNCALL CORP.
Apr. 1992 Established subsidiary company, SUNCALL CO., (H.K.) LTD. in Hong Kong.
Nov. 1992 Established subsidiary company, HIROSE TECHNOLOGY CORP.
Mar. 1994 Established BUJI MAN LING factory of SUNCALL CO., (H.K.) LTD. in Shenzhen, China.
Jan. 1995 Established the subsidiary MICROWIRE, INC. in Ibo, Hyogo.
Mar. 1995 Acquired the ISO 9001/9002 certification at head office plant.
・ISO 9001:HP suspensions, valve springs, and clutch springs materials
・ISO 9002:Valve springs and clutch springs
Oct. 1997 Closed SUNCALL SENDAI CORPORATION and merged the business to SUNCALL-KC CORPORATION.
Oct. 1997 Established subsidiary company, PT. SUNCALL INDONESIA. in Indonesia.
Aug. 1999 Acquired the ISO 14001 certification at head office plant.
Aug. 1999 Sold SWISS-TORONICS, INC., SUNCALL SANKO CORP.’s subsidiary.
Jan. 2000 Established subsidiary company, SUNCALL AMERICA INC.
Nov. 2000 Established subsidiary company, SUNCALL HIGH PRECISION LTD. in Chonburi Province, Thailand.
Jan. 2001 Liquidated SUNCALL SANKO CORP., a wholly owned subsidiary in the U.S. in South Carolina, U.S.A.
Dec. 2001 Listed on the first section of Osaka Stock Exchange.
Aug. 2002 Liquidated MICROWIRE, INC.
Jan. 2004 Succeeded in the development and commercial production of 10-gigabit optical transceivers.
Jan. 2004 Made SANKO PETERSON CORP., a U.S. corporation for which SUNCALL owns 57% of the shares, a wholly owned subsidiary;
Merged SANKO PETERSON CORP. to U.S. subsidiary SUNCALL AMERICA INC. (consolidated overseas subsidiary).
May. 2004 Constructed Nano Tech Center on the Kyoto head office premise.
Nov. 2004 Established subsidiary company, SUNCALL TECHNOLOGY VIETNAM CO., LTD. in Hanoi, Vietnam.
Mar. 2006 Established subsidiary company, SUNCALL
CO., LTD. in Guangzhou, China.
（Guangzhou）
Apr. 2009 Merged HIROSE TECHNOLOGY CORP.
May. 2011 Established Suncall Technologies (SZ) Co., Ltd. as subsidiary of SUNCALL CO., (H.K.) LTD. in Shenzhen, China.
Dec. 2012 Participated in KOBELCO SPRING WIRE (FOSHAN) CO., LTD. with Kobe Steel in Foshan, China.
Jul. 2013 With a merger of Tokyo Stock Exchange and Osaka Securities Exchange, listed on first section of Tokyo Stock Exchange.
Aug. 2013 Established subsidiary company, Suncall (Guangzhou) Trading Co., Ltd. in Guangzhou, China.
Sep. 2013 Established subsidiary company, SUNCALL TECHNOLOGIES MEXICO, S. A. DE C. V. in Aguascalientes, Mexico.
Nov. 2013 Established joint venture company, K & S WIRE CO., LTD. in Yangsan, Korea.
Jun. 2014 Established subsidiary company, Suncall (Tiajin) Co., Ltd. in Tianjin, China.
Oct. 2014 Established subsidiary company, HS POWERSPRING MEXICO,S.A de C.V. in Aguascalientes, Mexico (currently an equity-method affiliate).
Jan. 2017 Established sales office, SUNCALL AMERICA INC. Dallas Office in Texas, U.S.A.
Apr. 2017 Start mass-production of Shunt Busbars.
Apr. 2020 Established South Kyoto Plant in Minami-Ku, Kyoto.
Feb. 2022 Acquired the IATF 16949 certification for Shunt Busbars produced at South Kyoto Plant.

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SUNCALL CORP.
Headquarters / 14, Umezunishiura-cho, Ukyo-ku, Kyoto 615-8555, Japan
TEL: +81(75)881-8111FAX: +81(75)881-4445

www.suncall.co.jp