Corporate Profile2024

Respond with the Power ofChemistry
Not so long ago, talking to someone in a distant place via a “video
phone” with a palm-size display was only possible in spy movies oranimated films.But science has made such “dreamlike story”
possible in the real world.
Computers can be made smaller with higher performance and morefunctions if more transistors can be placed on a microscopic space
on a semiconductor chip.
Manufacturers of the cutting-edge semiconductors have been trying
to achieve an “atomic-level dreamlike goal” to develop
a microscopic circuit which is one hundred-thousandth the width of

To provide products that no one else can imitate.
Inheriting the spirit of the company since its foundation
to become "The e-Material Global CompanyTM".
With the challenge of continuous change, we will continue toa human hair, with a view to advancing AI and communication

Boost up!!

technology, which should become keys to solve serious social

TOK will continue to evolve to alternate dimension.

issues such as global warming and to expand human dreams
including space travel.
TOKYO OHKA KOGYO (hereinafter, “TOK”) has worked on realizing“dreams” of the semiconductor industry through the “Power ofChemistry” using its world-leading high purification technology andmicroprocessing technology cultivated over the years.

TOK will continue to meet expectationsof customers and society withthe “Power of Chemistry.”

1

2History of TOK

Past ~ Present

Contributing to the development of society as a high-purity
chemical manufacturer by delivering high value-added products
In 1936, TOK started as a chemical manufacturer that develops and manufactures high-purity chemicals. Since then,under the management policy since its foundation to “demonstrate an overwhelming presence by mastering technological capabilities even if the market size is small,” TOK entered into such fields as high-performance printing materials and panel materials. Since the late 1960’s, it has grown as a chemical manufacturer that provides microprocessing materials such as photoresists that play a key role in the semiconductor manufacturing process, together withdomestic and overseas semiconductor and electronics industries.

2000~Present“Expansion” of business and “deepening” of technology
1980~1999

TOK meets expectations of customers and society with the power of chemistry by deepening its core technologies with an aim to continue to deliverproducts corresponding to the sophisticated semiconductors and related
manufacturing technologies in a timely manner while expanding its business
into markets in which it can take advantage of its core technologies, highpurification technology and microprocessing technology.

Entered into the LCD manufacturing field
1968~1979
Establishment~1967

Built a foundation based on high purification technology

Entered into the semiconductor manufacturing field

Amid the intensifying market competition in the semiconductor industry,
TOK focused on sophistication of microprocessing technology in response
to demand for more efficient and higher performance products, and also
launched the Equipment Business to enter into new fields including
liquid crystal-related products.

In 1968, TOK developed “Ohkalight,” cyclized rubber-based photosensitive
resin. Based on that technology, TOK developed “OMR-81” and madea full-scale entry into the semiconductor manufacturing field to become
known as “TOK, the photoresists specialist.”

Started production of high-purity “caustic potash” that supported
the “coal industry,” one of the pillars of the post-war recovery

TR25000

In 1936, TOK became the first Japanese company to produce caustic potash (potassium hydroxide) which was cheaper than and superior to imported ones. Afterthe world war 2. TOK, as the only domestic manufacturer, preferentially received
electricity supply that was often scarce at that time and produced refined caustic
potash as electrolyte for batteries used in hard hat lights for coal miners, as analternative to hazardous sulfuric acid. TOK further honed its refining technology
and started exporting the “world’s highest-purity” potassium hydroxide to theworld in 1964.

●(2003) Negative tone photoresistive permanent film [TMMF series]

OMR-81

Permanent film-type photoresists used in forming structures in high-frequency devices, etc.

●(1991)LCD color filter manufacturing pigment dispersiontype negative photoresist [CFPR]
Became the first company to adopt “pigment dispersion method” which later became a mainstream in the field●(1989)Large-substrate coater line[TR25000]

The Corporate
Presentation video
is available.

“Coat & Spin method” developed by TOK became a mainstream of the coating method

Expansion of business●(1975)Non-metal resist developing solution[NMD-3]
TOK’s concentration setting to maintain the optimal sensitivity became the global de facto standard●(1968)Negative tone photoresist for semiconductors[OMR-81]
Adopted by domestic and overseas manufacturers as the cutting-edge photoresists with superior adhesiveness●(1971)Synthetic rubber photoresist[OMR-83]

Contributed to the explosive proliferation of“TVs” with “Ohkaseal” high-purity potassium silicate

Remained as a mainstream photoresist for semiconductor manufacturing until 1979●(1972)Positive tone photoresist for semiconductors[OFPR series]
The first domestic positive tone photoresist for semiconductor in Japan.

Developed made-in-Japan CRT phosphor bonding which received a highevaluation from overseas top brand manufacturers including RCA (the U.S.)
and Phillips (the Netherlands).

●(1997)KrF chemically-amplified positive tone photoresist [TDUR-P015]
Adopted worldwide and became the de facto standard of this type of photoresists

Deepening of technology●(2001)ArF positive tone photoresist [TARF-P series]
Maintained the world’s top-level share in photoresists for the cutting-edge semiconductor manufacturing process●(2018)EUV (Extreme Ultra violet)
photoresist[EUVR series]
Cutting-edge photoresists adopted for full-scalemass production in 2019

Crowds around the street television in front of Shibuya Station(around 1954)

3

1982
NEC9801 released

1991
PC-9801NC released

Photo courtesy of ©NEC

Photo courtesy of ©NEC
●Semiconductor Manufacturing Field

2007~
Smartphone●High-Purity Chemicals Field●Panel Manufacturing Field●Image Sensor/MEMS Manufacturing Field

4

TOK’s business fields and main products

Present

Offering to a full line-up of products,
utilizing the world's most advanced microfabrication technology
TOK Group is a long-established photoresist manufacturer and one of its strengths is its full line-up of products that boast
the world's leading market share, including photoresists for EUV/ArF/KrF in the advanced field and g/i-line photoresists inthe legacy field. We provide a wide range of materials for the manufacture of a variety of cutting-edge electronic devices,
particularly in the semiconductor manufacturing field, where rapidly innovating technology is progressing.

Semiconductor Packaging Manufacturing Field
Semiconductor Manufacturing Field
Various chemicals including photoresists, the TOKGroup’s core products, are used in forming finewiring and transistors inside semiconductor chips.
The TOK group holds a leading market share insemiconductor photoresists in the world.

High-Purity Chemicals Field
High purification and its control technologies that
we have honed since our founding are leveraged
in the manufacturing of high-performancechemicals that are essential for semiconductor
manufacturing, etc.

Semiconductor manufacturing consists of two processes: a front-end process in which electric circuits
including fine transistors are formed, and a backend process in which semiconductor chips formedin the front-end process are sealed to protect fromexternal shocks and wiring to connect with otherelectronic components is formed.
The TOK Group’s various photoresists andhigh-purity chemicals also contribute to the evolution of the back-end process of semiconductor
manufacturing.

g-line/i-line Photoresists
KrF Excimer Laser
Photoresists

ArF Excimer Laser
Photoresists

EUV (Extreme Ultraviolet)
Photoresists

EB (Electron Beam) Photoresists

Interlayer Insulating Film

Diffusing Agents

Directed Self-Assembly
Materials (DSA)

Materials for Cover Coat

Bump Photoresists
Advanced Surface Preparation

Developing Solutions

Photoresists for RDL

Adhesive Materials

Thinner

High-Purity Chemicals

High-Purity Chemicals

Panel Manufacturing Field

Image Sensor/MEMS Manufacturing Field
The TOK Group’s various products contribute to
manufacturing more compact and sophisticatedelectronic devices including image sensors, key
components of smartphone cameras, and BAW
filters that is part of antenna.

Materials for Photosensitive
Permanent Films

Resists for Micro Lens

Lift-off Resists

High-Purity Chemicals

New Business Field
We are working to create new values leveraging ourcore high purification and microprocessing technologies accumulated over the years, in collaboration
with domestic and overseas companies, universities,
and research institutions.

Microprocessing technology honed in the semiconductor manufacturing field is also leveraged in
the manufacturing of LCD and OLED displays.

TFT Resists

Resists for Color Filters

Resists for Organic EL

High-reliability
Transparent Materials

High-Purity Chemicals*MEMS: Micro Electro Mechanical Systems

5

6

Semiconductor manufacturing processes and major products
The TOK Group’s products are used in nearly all processes of semiconductor manufacturing.

Tokyo Ohka Kogyo
Product Site12-2) Wireless bonding

Al

Photoresists

Insulation film

Wiring
Silicon wafer

Solder balls called “bumps”
make a connection withthe circuit board.

Oxide films

1) Photoresist coating
Photoresist film is formedon Silicon wafer by spin coating.

3) Development

5) Photoresist cleaning

The photoresist pattern
is formed
by development.

The photoresist pattern after etchingis removed by clean solution and/or
plasma equipment.

7) Formation of insulation
film and wiring

9) Completion oan integrated circuit

The wirings that made by aluminumor copper and the insulating films
is formed by dry or wet process.

Multiple ICs are created on wafer
surface using microprocessing
technology.

11) Semiconductor chips
completed
After dicing, each wafer portion
becomes a semiconductor chip.

12-1) Wire bonding
The process of providing electrical connection between
the semiconductor chip and the external leads of thesemiconductor device using fine bonding wires.

Semiconductor
Semiconductor
manufacturing
manufacturingflow
flow

Front-end Process2) Exposure4) Etching

Circuit design of photomask istransferred to coated photoresist
film by irradiation of light.

Remove the under layerusing the photoresist pattern
as a protective film.

Cross section image of each process1
7

Process of making integrated circuits on a silicon thin disk that called wafer,and manufacturing semiconductor chips.

236) Formation of
a semiconductor field
The diffusing agent is coatedto form a semiconductor field
after baking process.

Back-end Process

8) Formation of
integra ted circuits
ICs are formed by repeating
The processes (1) through (7).

10) Dicing of wafers
Wafer is diced into chip-sizedcomponents.

Process of separating the wafer into individual semiconductor
chips, and place them into protective packages.

14) Molding (Resin seal)
Semiconductor chips are sealed with a resinor ceramic mold to protectfrom external environment.

13) TSVThinned semiconductor chips are layered,and chips are connected usinga through-silicon-via.

■Photoresists ■Oxide films ■Silicon wafer ■Wiring ■Insulation film

4

5

6

7

9
8

Toward “TOK’s overarching aspiration”

Present ~ Future

Contributing to the realizing
a sustainable and abundant society
by responding with the power of chemistry
Since its founding, the TOK Group has always focused on “high purity” chemicals and done its best to put into
practice its four management principles, evolving along the way. We will continue to follow that path and aim tofurther grow as a “company meeting expectations of customers and society with the power of chemistry.”
The TOK Group is propelling a long-term vision for 2030 called "TOK Vision 2030" that was made by backcastingprocess considering future business activity.The TOK Group will contribute to creating value in the future throughElectronic Material such as the photoresist that is key raw materials in manufacturing semiconductor that create
new value, including smartphones, autonomous driving, and remote medical.

Management Principles

100-Year Company

・ Create a frank and open-minded business culture
・ Continue efforts to enhance our technology
・ Raise the quality levels of our products・ Contribute to societyManagement Vision“The e-material Global Company TM”
contributing to a sustainable future through Chemistry

TOK Vision 2030: Overarching Aspiration
・ Provide innovation that inspires customers
・ Earn trust from stakeholders worldwide
・ Provide new added value that inspires customers
・ Enhance corporate value sustainably with an aim to contribute to SDGs
・ All employees can work lively with pride

Business areasMaterial
for semic
onductoMateriar front enl for semd procesicon
ductor ps
Display mateackaging
rials
process
Highpurity
chem
and m
icals
ore n
ew b
usine
sses
etc.

Company-Wide Strategies*(1) Increase global market share of cutting-edge photoresists(2) Acquire and create core technologies in electronic materials
and new fields(3) Secure stable supply of high-quality products and establish
an optimal production system for the Group(4) Improve employee engagement and promote
people-oriented management(5) Build sound and efficient management foundation*tok Medium-Term Plan 2024(FY2022~FY2024)

910Strategy of building close relationships with customers through “the trinity”

Thorough quality control 2

Close collaboration between R&D, manufacturing,and sales and “high quality products” to meetincreasingly challenging expectations from customers

Thorough eliminate contamination
Our biggest concern in the manufacturing process is
contamination. It is absolutely unacceptable to click aknock-type ballpoint pen inside a clean room. In the
manufacturing sites of the cutting-edge semiconductors
with the minimum linewidth of 10nm, contaminationsuch as “one drop of coffee in a 50-meter Olympic size
swimming pool” is not allowed.
In order to meet these stringent requirements, TOK's
manufacturing sites are strengthening and thoroughly
implementing measures both in terms of equipment,such as various filtration systems and the installation ofclean rooms at the highest level, and in terms of employee training.

Semiconductors cover a wide variety of products including logic, memory, and image sensors and continue to advance rapidly. In addition, the semiconductor
manufacturing process varies depending on customers
and the product type. Accordingly, we are required
to promptly deliver chemicals, including photoresists
and clean solutions, optimized for design and manufacturing process of semiconductors.
To make it possible, we must fully understand whatcustomers need. It is also important to ensure to meetcustomers’ requests on improvement of product quality which has been becoming more sophisticated year
by year.
In order to achieve this, it is essential to have "Thetrinity collaboration" between R&D, manufacturing
and sales, and the TOK Group is strengthening its"R&D" function at its main overseas manufacturingbases, in addition to its main development base, the
TOK Technology and Innovation Center (TTIC)(p13-14), as well as its "Manufacturing" function by
establishing an extensive manufacturing and inspection system, and is also strengthening its "R&D"
function at its main overseas manufacturing bases.
The Group is also strengthening its "Manufacturing"
function by establishing a well-developed manufacturing and inspection system, and is building a system tomeet customers’ requests adequately and promptly.

Manufacturing by the TOK Group
Development flow under “the trinity” to meet needs
The TOK Group’s manufacturing is based on the solid technicalskills supported by the frank and open-minded corporate culture
enabling "collaboration across any boundaries if necessary".

Example of a filtration process (filtering)

TOK Group

Requests to the TOK Group,
evaluation for samples, etc.

2) R&D

1) The trinity collaboration

Customer

Provide developed products

Thorough quality control 1"Same level" of inspection.
Photoresist undergoes repeated inspections at each stage of the
production process, including "input and mixing of raw materials", "adjustment and filtration of intermediate products"and"filling and packaging of products". For example, in the final
stage of the product process, the characteristics of the photoresist are inspected in manufacturing facilities and environmentsthat are "at the same level" as those used in the manufactureof semiconductors at the customer's site, to ensure that thecharacteristics are at the level required by the customer.
The TOK Group has also established a strict quality control system at each of its production sites in order to meet thedemands for improved product quality, which are becoming
increasingly sophisticated.

Sharecustomer needs

Inspire customers with highvalue-added products
Satisfying features, low costand superior quality

High-quality products
Share various information fromthe development phase to facilitate
the launch of products

3) Manufacturing

Photoresist patterning process

1112Overseas sales ratio

Promotion of global strategy■Domestic■Overseas“To deliver the best products and service to local
customers promptly at any site around the world”

17.4%

21.2%

The TOK Group has expanded globally as the market structure changes, and the overseas sales ratio
now exceeds 75% every year. In our overseas sites,
locally hired employees have been showing steady
improvement in their skills year by year under
the adequate training system, and more and more
overseas subsidiaries are actively promoting excellent human capital, even for executive positions, todelegate management functions.
In order to “deliver the best products and service
to local customers promptly at any site around theworld,” with the level of difficulty in developing
products increasing every year, the TOK Group is
working to further strengthen collaboration within
the Group and develop global personnel.

17.8%

82.6%
82.2%

78.8%
2023/12162.2billion yen
2022/12

TOKYO OHKA KOGYO CO., LTD. Europe Branch

175.4billion yen
2021/12

TOKYO OHKA KOGYO AMERICA, INC.

140.0billion yen

TOKCCAZ,LLC.

Manufacturing sites of the TOK GroupTOK ADVANCED MATERIALS CO., LTD.

TOKYO OHKA KOGYO CO., LTD.
(Headquarter)

CHANG CHUN TOK (CHANGSHU) CO.,LTD.
TOK CHINA CO., LTD.
Shanghai Representative Office
TOK TAIWAN CO.,LTD.

Koriyama Plant

Utsunomiya Plant

Kumagaya Plant

Sagami Plant

Gotemba Plant

Aso Plant

TOKYO OHKA KOGYO CO., LTD. Singapore Office

R&D sites of the TOK Group

Human capital development at the TOK GroupTOK Technology and Innovation Center(TTIC) TOKYO OHKA KOGYO AMERICA, INC.

TOK TAIWAN CO., LTD.

13

TOK ADVANCED MATERIALS CO., LTD. (KOREA)

Since its founding, employees have been the greatest asset of
the TOK Group. The Company’s human capital policy is basedon the following “five principles,” derived from its long-held
philosophy that “human capital are a company asset.”:“Business always starts with people,” “Any discrimination is strictly
prohibited,” “Ensure fair and equal compensation,” “Educate
personnel and promote creativity,” and “Personnel systems
emphasizing and ensuring transparency.”
And, the TOK Group is focusing on the development of human capital who is “Strengthen human capital who can perform research, make decisions, and take actions on their own
initiative”. Under the active participation of the administration,
TOK Group is creating a curriculum that can learn new andgain various experiences through employee training.

TOKYO OHKA KOGYO AMERICA, INC. Oregon Plant TOK TAIWAN CO., LTD. Tongluo Plant

CHANG CHUN TOK (CHANGSHU) CO., LTD. TOK ADVANCED MATERIALS CO., LTD. (KOREA)

14

Creation of new social value

Top-level technological capabilities cultivated are utilised
to reduce risks associated with business activities
and to solve social issues facing humanity.
United Nation’s “2030 Agenda” appealing for “Endpoverty in all its forms everywhere” encourages companies to tackle serious issues faced by the earth andhuman race as “business opportunities” if there are any
fields in which they could apply their comprehensive
strengths including human capital, technologies, andcapital to solve the issues.

Ascertain risks and opportunities
TOK strives to reduce its environmental impact
and improve the efficiency of its production systemthrough a centralized management system at all sites.
The TOK group has identified 'preservation of the global
environment for future generations' and 'supply chain sustainability' as key issues (materiality) towards TOK Vision 2030
(p. 9), and promotes initiatives such as 'proper managementof chemical substances' and 'carbon neutrality' in cooperation
with suppliers.

We agree with the idea of “tackling issues (risks) andutilizing them in business” and are striving to reduce
environmental burden and other risks resulting fromthe TOK Group’s activities with SDGs as guidelines.
At the same time, we also focus on the developmentof new products/technologies that may lead to creation of new social value by utilizing our cultivatedtechnological capabilities.

■Appropriate management of chemicals : All sites implement

production activities in accordance with ISO 14001 environmental management. Responsible Care activities ensure theproper management of chemical substances throughout the
supply chain.

■Toward Realization of Carbon Neutrality:TOK strive toaccurately assess the environmental impact throughout the
supply chain, and promote further energy savings in manufacturing facilities, equipment and logistics, as well as thegreening of electricity at our main sites.

Responsible Care activities
Japan Chemical Industry Association
https://www.nikkakyo.org/

Ascertain risks and opportunities
Holds the world's top class in photoresists
for “power semiconductors” that enhanceenergy-saving effects
Power semiconductors are used to control integrated circuits(LSI), which is the brain of a PC, to control motor driving andbattery charging of the products incorporating LSI, and theimprovement in its performance enhances energy-saving effects.
The TOK Group also develops and supplies its own
photoresists (for g-line and i-line), which are indispensable forthese semiconductors, which are said to hold the key to EV
innovation. The TOK Group's core technologies, such as highpurity and microfabrication, play an important role in raising
the environmental value of end products "behind the scenes" inthis way.

R&D site including open innovation
TOK Group’s central laboratory equippedwith a super clean room designed for thedevelopment of the next-generation
miniaturization products. It has facilities
and equipment to conduct study frombasic research to open innovation that may
lead to development of cutting-edge
products and technologies.
15

TOK Technology and Innovation Center (TTIC)

16

Message from the President

Aiming to become
a “100-year company”
that truly contributes to society
with the power of chemistry.
It was in 1976 when a U.S. space probe made a soft landing on Mars
which is 75,280,000 km away, 196 times farther than the moon, and sent
detailed data, including its geological condition, temperature, and livingorganism, to the earth. Unfortunately, the existence of Martians was notconfirmed, but we were once again thrilled by the wonder of the“Power of Science” following the moon landing by Apollo 11 in 1969.
TOK’s photoresist “OSR” was used in manufacturing the superhighfrequency semiconductor device installed in the probe named “Viking
1.” The product was developed on the request from a government
research institution and received a famous prize in chemistry for realizinga resolution of 1μm, which was astounding at that time, but was nevercommercialized because of its extremely high price.
The Spinless coater, commercialized by TOK as one of the LCD
manufacturing equipment in 2003, was an innovative product capable ofreducing the amount of photoresists used to one-third of the traditional
equipment. We developed the product knowing that the shipments ofphotoresists would decline as we put priority on meeting the customer’s
request to cut costs.
5G communications which realize high-speed, high capacity, low latency,
and multiple simultaneous connections may be able to eliminate regional
disparities in education, healthcare, and welfare, among other things,
with its advanced remote-control functions. Furthermore, in a society
where everything, including smartphones and other mobile devices aswell as cars, home appliances, and industrial machineries, is connected
via communication networks, “big data” collected from all sorts of places
may become a “key” to unlock a new future. As semiconductors are thebrain of such technology, higher performance is required more than ever,and higher expectation is placed also on photolithography,
a “key” to manufacturing of semiconductors.
We believe what we need to meet such expectation is corporate efforts
to cultivate technological capabilities step by step and the “strong desire”
to want to “contribute to society through chemistry.” The TOK Groupaims to become a “100-year company” that truly contributes to society
by sharing these values with all employees and inheriting DNA since
its founding that seeks to “develop technologies that no one can imitate
although it is difficult” under frank and open-minded corporate culture.

President and Representative Director

1718

Corporate Outline

Executives & Corporate Auditors

Global Network

The Board of Directors
Representative Director, President

Noriaki Taneichi

Director

Harutoshi Sato

Director

Yusuke Narumi

Director

Kosuke Doi

Director

Hirotaka Yamamoto

Outside Director

Ayako Ikeda

Company Name : TOKYO OHKA KOGYO CO., LTD.

Nobuo Tokutake

Outside Director (Audit and Supervisory Committee Member)

Noriko Sekiguchi

Outside Director (Audit and Supervisory Committee Member)

Kazuo Ichiyanagi

Outside Director (Audit and Supervisory Committee Member)

Hisashi Ando

Subsidiaries and affiliates□TOK Technology and Innovation Center ( T TIC)
1590 Tabata, Samukawa-machi, Koza-gun, Kanagawa 253-0114
TEL. 0467-75-2151 (Rep.)□OHKA SERVICE CO., LTD. (Established May 1986)
150 Nakamaruko, Nakahara-ku, Kawasaki, Kanagawa 211-0012, JAPANTEL.044-435-3117
Business: Insurance agent service□Shonan Operation Center
7-8-16 Ichinomiya, Samukawa-machi, Koza-gun, Kanagawa 253-0111
TEL. 0467-74-2125 (Rep.)□TOK ENGINEERING CO., LTD. (Established October 1992)
150 Nakamaruko, Nakahara-ku, Kawasaki, Kanagawa 211-0012, JAPANTEL.044-435-3113
Business: Manufacture and sales of auto chemical supply machines□Koriyama Plant
1-23 Machiikedai, Koriyama-shi, Fukushima 963-0215
TEL. 024-959-6911 (Rep.)

Directors,Who Are Audit and Supervisory Committee Members
Director (Standing Audit and Supervisory Committee Member)

Sites in Japan□TOKYO OHKA KOGYO AMERICA, INC. (Established April 1989)
4600 NE Brookwood Parkway, Hillsboro Oregon 97124, U.S.A.
TEL. +1-503-693-7711
Business: Manufacture and sales of photoresists, and development, manufactureand sales of photoresists-related chemicals□Utsunomiya Plant
21-5 Kiyohara Kogyo Danchi, Utsunomiya-shi, Tochigi 321-3231
TEL. 028-667-3711 (Rep.)□Kumagaya Plant
823-8 Kamibayashi, Miizugahara, Kumagaya-shi, Saitama 360-0844
TEL. 048-533-1171 (Rep.)

Established : 25 October 1940

Officers

Headquarters : 150 Nakamaruko, Nakahara-ku,Kawasaki,
Kanagawa 211-0012 Japan

Chief Executive Officer

Noriaki Taneichi

Senior Managing Executive Officer

Kosuke Doi

Paid-in Capital : ¥14,640,448,000 (as of 31 December, 2023)

Managing Executive Officer

Gitae Kim

Accounting Period : January 1 to December 31

Executive Officer

Yusuke Narumi

Number of Employees : 1,877 (Consolidated/fiscal year ended 31 December, 2023)*Excluding seconded employees and contract workers
		

Executive Officer

Hirotaka Yamamoto

Executive Officer

Okikuni Takase

Executive Officer

Shoji Otaka

Executive Officer

Yuichi Honma

Executive Officer

Shinichi Isogai

Executive Officer

Motoko Samezawa

Overseas offices

Executive Officer

Tsukasa Honkawa

Executive Officer

Naoki Watanabe

Executive Officer

Kazuyuki Shiotani□TOKYO OHKA KOGYO CO., LTD. Singapore Office
8 Eu Tong Sen Street, #21-91, The Central, 059818, Singapore
TEL. +65-62261485

Executive Officer

Atsushi Sawano

Executive Officer

Katsumi Ohmori

Executive Officer

Naoki Tatsuno□TOK TAIWAN CO., LTD. (Established January 1998)
4F., No.95, Beida Rd., East Dist., Hsinchu City 30044, TAIWANTEL. +886-3-534-5953
Business: Manufacture and sales of photoresists, and development, manufactureand sales of photoresists-related chemicals□Gotemba Plant
1-1 Komakado, Gotemba-shi, Shizuoka 412-0038
TEL. 0550-87-3003 (Rep.)□CHANG CHUN TOK (CHANGSHU) CO., LTD. (Established October 2004)
Changchun Road, Riverside Industrial Park, Changshu Economic Development
Zone, Jiangsu Province 215537, PRC
TEL. +86-512-5264-8000
Business: Manufacture and sales of photoresists-related chemicals□Aso Plant
4454-1 Miyaji, Ichinomiya-machi, Aso-shi, Kumamoto 869-2612
TEL. 0967-22-4411 (Rep.)□Distribution control center
4-1-1 Kamigo, Ebina-shi, Kanagawa 243-0434
TEL.046-235-2821 (Rep.)□TOK ADVANCED MATERIALS CO., LTD. (Established August 2012)
45, Cheomdan-Daero 60Beon-Gil, Yeonsu-Gu, Incheon, 21990, Republic of Korea
TEL. +82-32-850-2000
Business: Development, manufacture, and sales of photoresists and related chemicals□TOK CHINA CO., LTD. (Established January 2021)
703B, GIFC.1438 Hongqiao Road. ChangNing District, Shanghai, CHINA
TEL. +86-21-5840-8800
Business: Sales of photoresists for semiconductors and flat panel displays andphotoresist-related high-purity chemicals□TOKYO OHKA KOGYO CO., LTD. Europe Branch
Polarisavenue 11, 2132 JH Hoofddorp, The Netherlands
TEL. +31(0)23-205-2623□TOKCCAZ, LLC.(Established May 2022)
1 West Deer Valley, Suite 206, Phoenix, Arizona 85027, U.S.A.
TEL. +1-623-231-7553
Business: Sales of photoresists for semiconductors and photoresist-related high-purity
chemicals in United States(as of 28 March, 2024)

Net Sales by Business Segment(Millions of yen)

Net sales (Millions of yen)[2023/12]

175,434

others2%

Operating income (Millions of yen)

Equity ratio (%)

R&D costs (Millions of yen)(Comparison with the previous year)

102
140,055

20,707

75.3

71.7

71.3

72.9

8,879

9,545

12,658

88

9,800
2.9

3.0

3.1

71

62

2020/12 2021/12

2022/122023/122019/12

69
42

2.5

1.8

9,546

2019/1219

11,03877.5

15,589

54%

100

97

22,706

Electronic functional
materials(Comparison with 2019)88

30,181

102,820

44%

2◦ Base unit index ◦ Base unit index

162,270

117,585

High-purity
chemicals

CO2 Emissions (10,000t-CO )2020/122021/122022/122023/122019/12 2020/12 2021/12 2022/12

2023/122019/122020/12 2021/12

2022/122023/122018/122019/122020/122021/122022/1220

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