Patent No. 7146223; September 26, 2022
For glass substrates and solar panels
Antistatic antifouling coating agent

Improvement of power generation efficiency degradation problem
due to adhesion of dirt

Strong antistatic antifouling & super hydrophilic self-cleaning coat

「Solar Self Maintenance Coat CNT」

Development of a super-hydrophilic coating
agent with top priority on antistatic function
Phase 1: 2000-2021 Super Glass Barrier
At our company, we grasped the problems of fluorine coating and photocatalyst coating, which have been called
representative of antifouling coating agents, and in order to overcome these problems, we made a major change in the way
we think about antifouling. The anti-static anti-fouling coating agent makes it extremely difficult for inorganic stains such as
yellow sand and carbon to adhere, and the attached stains are super hydrophilic and self-cleaning regardless of the presenceor absence of light. The world‘s first 100% inorganic coating agent. Exhibits outstanding antifouling effects on exterior walls,
exterior materials, paint films, etc. Since 2000, the antistatic effect of tin oxide based on an inorganic adhesive binder curesquickly at room temperature, and the antistatic property of 108Ω/□ to the power of 8 does not attract dirt such as yellow sandor carbon, and minimizes adhesion. increase. Under the product name Super Glass Barrier, we have a track record of
construction in Japan and around the world, and have sold a total of 10 million square meters of material.

Phase 2: 2022-Solar self-maintenance coat CNT
This time, we succeeded in adding single-walled carbon nanotubes to the Super Glass Barrier for the purpose of greatly
increasing its antistatic effect, and completed a new product that exhibits an amazing antistatic function with conductivity of104Ω/□. Adhesion, strength, chemical resistance, and weather resistance are greatly improved by adding single-walled CNT.
In addition, the improved thermal conductivity has greatly expanded the range of applications, including deicing promotionfunction, anti-fouling measures in salt-damaged areas, and anti-fouling measures in cold areas. Since it does not depend on
humidity and exhibits conductivity of 104Ω/□ even when dry, antistatic and antifouling effects can be expected even in clean
rooms and desert areas.

Conductivity
10４Ω/□

Patented
Patent No. 7146223; September 26,
2022
For glass substrates and solar panels
Antistatic antifouling coating agent

What is SWCNT? =Single Walled Carbon Nano-Tube
The brand name "TUBALL" for single-walled carbon nanotubes is a product manufactured anddeveloped by OCSIAL, which is based in Luxembourg. The current annual production capacity
is 90 tons. It accounts for 97% of the world's production of single-walled carbon nanotubes.
They have set a production target of 250 tons in 2023.
https://ocsial.com/nanotubes/
Kusumoto Chemicals, Ltd is the sole agent in Japan.
This time, Kusumoto Kasei Co., Ltd. has developed its own coating agent using SWCNT andusing its own dispersion technology. By adding them to Sketch‘s SGB binder, we succeeded in
improving the antistatic function by 104Ω/□.It was also confirmed that it is compatible withAPT.
In addition to improving antistatic performance, SWCNT's strength, adhesion, chemical
resistance, and weather resistance have been greatly improved.
Therefore, we will take on the challenge of developing new applications as a manufacturer
sketch.
Please participate in application development.

Characteristics of SWCNT
1, 5 times lighter than copper
2, 100 times stronger than steel
3. Stable up to 2800 ℃ in vacuum
4, the highest aspect ratio of 3000 or more
5, diameter ~ 2nm, length ~ 4μm
6, 10 times the thermal conductivity of aluminum
7, strong conductivity at low concentration

6 features of Sketch’s SGB binder

component
・ SiO2・ SnO2· methanol· water

SWCNT is the only additive that changes the physical properties of materials with 0.01% ofaddition. Why is it possible?
When pervaded in the matrix of materials, single-walled carbon nanotubes form a threedimensional reinforcing and conductive network. That network creates new physicalcharacteristics. It can enhance mechanical strength, conductivity and thermal conductivity.

①, Super hydrophilic self-cleaning property②, Antistatic function 109Ω/□③, normal temperature quick drying④, 100% inorganic hard coat⑤, high transparency, low refraction⑥, chemical resistanceSignificantly improved functions

component
・ SiO2・ SnO2· methanol· water

＋

SWCNT
APT

①, + strong antistatic 104Ω/□②, + photocatalyst, decomposition of organic matter③, + Strengthening adhesion④, + wear resistance / hard coat⑤, + Ice deicing promotion effect⑥, + chemical resistance⑦, + weather resistanceSuper Glass Barrier CNT3）Surface resistance value； Improvement to 10 3~4 Ω／□Considering the possibility that water in the coating film remains, I tried to verify it after heating
and one day, but it still displayed 103-4 Ω／□.

Evaluation of New product under development “SGB CNT”
Disperse TUBALL single-walled carbon nanotubes from OCSIAL, the world's largest
manufacturer in Luxembourg, in Japan ,An evaluation test of antistatic performance was conducted by adding SW-CNT to the
Sketch’s Super Glass Barrier.

Conductivity of
10 to the 4th
power

What is the difference between "Super Glass Barrier" and "Super Glass Barrier CNT"?

Component
・SiO２
・SnO2
・Methanol
・Purified Water

Significantly
improved functions

Antistatic anti-static super hydrophilic self-cleaning
coat for exterior materials. Among the antifoulingcoats developed by our company, it is the mostrepresentative product with application record of
more than 15 years in Japan and other countries
around the world.

Component
・SiO２
・SnO2
・Methanol
・Purified Water

Single-Walled
Carbon Nano Tube

＝10 4 Ω／□4) About hydrophilicity；

Normally, the glass surface becomes water-repellent (=high water droplet contact angle) when it is splashedwith water. SGB can be modified to a hydrophilic state (=low water droplet contact angle) where water spreads on
its surface.
There are three patterns: when the original hydrophilicity
is improved when nanomaterials are added, when there
is no change, and when it is decreased.

Greatly improved antistatic
function, improved chemical
resistance, weather resistance,
adhesion, and wear resistance.

PurposeSingle-walled carbon nanotubes can significantly improve the properties of the material (mechanicalstrength, electrical conductivity, thermal conductivity) simply by adding them. Super Glass Barrier(hereinafter referred to as SGB) to be added this time is an inorganic transparent coating agent thathas both antistatic and super hydrophilic functions. It can also be used as a binder, and otherfunctionality can be imparted by adding nanomaterials that are compatible with each other.
The purpose of this test is to improve the conductivity or coating film strength of SGB and to verify theaddition of other new functionality by adding the above-mentioned single-walled carbon nanotubes.

Summary
TUBALL SWCNT (Single-Walled Carbon Nano Tube) was added to SGB. Good stability as a
coating agent. It was confirmed that the single-walled CNT improved the conductivity andwear resistance.

same performance level as only SGB

5) About the strength of the coating film in dry friction and wet friction
SGB is a coating and binder that imparts antistatic properties and superhydrophilicity by forming a
200 nm uneven film in a room temperature environment.
SGB has a problem that it is vulnerable to wear due to its structure, and in the past, we have tried
to enhance wear resistance with Nano Diamond and WO3.
This time, the state of the coating film was observed by rubbing by wiping with 30 wet wipes and
30 dry wipes. Normally, in the case of SGB alone, wet friction does not affect the coating film, butwhen dry friction is applied, thin scratches (probably the coating film is scraped) are graduallyformed on the coated surface, and this is repeated. The coating film will be completely peeled off.
With SGB + SWCNT, no scratches were found on the coating film even after dry rubbing more than
the specified number of times, and a clear improvement in wear resistance was confirmed.

After adding CNT to SGB this time, the following verification was carried out step by step.
1) Stability in liquid form
2) Appearance after application
3) Surface resistance value
4) About hydrophilicity
5) About the strength of the coating film in dry friction and wet friction6) Conductivity and hydrophilicity after rubbing1） ) Stability in liquid form; Stability ◎It seems that it is stable with no fine particle size.
There is no gelation, separation or sedimentation.

2） Appearance after application
Apply once with Microfiber Cloth
without cleaning.
We are not sure if it was caused byhand , but the shades of carbon arelinearly uneven and visible.
the glass with a visible lighttransmittance of 91% dropped toaround 85%.
However, when It added it withWO3
It increased VLT a little.

6）Conductivity and hydrophilicity after rubbing
Wet friction and dry friction were performed, and then the measurement was performed
again. The measurement results are as follows.
Conventional product SGB
SGB+CNT+WO3

SGB + single-walled CNT

Surface resistance value; same status as before friction
Super Hydrophilicity; 〇→×Surface resistance value; 103 Ω／□ ⇨ 103 Ω／□
Super Hydrophilicity; ◎→◎APT & single-walled carbon nanotube addition significantly improves functionality
Existing product; Super Glass Barrier
As an antifouling coating for exterior materials, it has been used formore than 15 years, and has sold 10 million square meters ofmaterials in Japan and other countries around the world.

New Product; Solar Self Maintenance Coat CNT
・A high-performance type with no light photocatalyst APT and singlewalled carbon nanotubes added to the super glass barrier. Patented.

6 features of SGB binders from Sketch
component
・SiO2
・SnO2
·methanol·water① Super-hydrophilic self-cleaning properties②Anti-static function 108Ω/□③ Fast drying and hardening at room temperature④ 100% inorganic, hard coat
⑤ high transparency, low refraction⑥ chemical resistanceGreatly improved functionality
component
・SiO2
・SnO2
·methanol·water

APT
&
SWCNT

＋

(1) + Strong anti-static 104Ω/□②＋Photocatalyst (decomposition of organic matter)③＋Strengthen adhesion④＋Abrasion resistance/Hard coat⑤＋Deicing promotion effect⑥＋Chemical resistance⑦＋Weather resistance

What is the difference between conventional "Super Glass Barrier" and "Solar Self-Maintenance Coated CNT"?
What is super-hydrophilic function?

What is antistatic function?

The base material no longer repels
water, forming a thin film of waterthat stretches and spreads. It has aself-cleaning effect that water gets
under the dirt, lifts the dirt andwashes it away, and provides a clear
view and a clear anti-fogging effect.
It also has the effect of deterring
raindrops and limescale adhesion.

Static electricity is less likely to begenerated from the base material,and it is possible to obtain the effectof making it difficult for dirt itself tostick, mainly inorganic dirt such as
yellow sand and dust. We were able
to commercialize the antistatic
nanomaterial = SnO2 as an
antifouling coating for building
materials, which is the only one
technology of our company in theworld.

photocatalytic effectPhotocatalysts are nanomaterials
that can decompose and remove
organic stains (oil stains, resin
stains, etc.) that come into contact
with them when they are exposed tolight such as the sun or fluorescentlamps.

Coated surface

Uncoated surface

Uncoated surface

Less dirt

Many dust

Addition of single-walled carbon
nanotubes greatly improves
conductivity.
The antistatic and antifoulingproperties greatly reduce theadhesion of dirt.

＋antistatic
Upper half

Coated surface

What is strong anti-static function?

application area
decompose dirt

Uncoated
No change

Enhancedantistatic＋strong adhesion＋ Wear resistance＋ chemical
resistance＋ Promotion ofice breakup＋ Weatherability

What is APT? = Ammonium Para Tungsten, Photocatalyst without light
The problem with titanium oxide, which is famous as a photocatalyst, is that it can only be effective where it is exposed to light.
Therefore, we turned our attention to tungsten oxide, which is one of the photocatalyst nanomaterials.
Tungsten oxide is known for its photocatalytic effect and its photo response over a wider wavelength range than titanium oxide.
Initially, we started with research to enhance the performance of tungsten oxide.
The ammonium tungstate produced in the process has the same performance as a photocatalyst even in the dark.
We discovered by chance that it was effective, and shifted to research as a new material, a non-photocatalyst.
And because of repeated trial and error, it was born

"Ammonium tungstate, a deodorizing antibacterial coating made of new materials that does not require light.“
This nano-tungsten is the world's smallest class of tungsten particles with a particle size of 5 to 10 nm compared to theconventional particle size of 20 to 40 nm.
Nanoparticles with extremely high surface area per unit deposition maximize catalytic effectiveness.
In addition, the minute tungsten solution is completely colorless and transparent, so it can be used in all aspects of daily life,
from clothing to home painting. There have been no reports of the toxicity of ammonium tungstate to humans.

Colorless transparent
ammonium tungstateTransmission electron microscope image

Characteristics of Solar Self-Maintenance Coat CNT
Hard-coated type for sandy desert areas
Deicing promotion coat type for cold regions with a lot of snow
Solar self-maintenance coat CNT・・・For solar panels only
① SiO2 (silica)；Ultra-hydrophilic adhesion binder function②SnO2 (tin oxide)；antistatic function③ SWCNT； strong antistatic 104Ω/□, strong adhesion, chemical resistance, super hard coat properties, deicing effect④ APT (Ammonium Para Tungsten)； photocatalyst without light⑤ Methanol, water

Solar self-maintenance coated CNTs are made of 100% inorganic adhesive binders that use silica particles of 10
nano-size or less, and are highly transparent, hardening at room temperature, quick-drying, and super-hydrophilic.
Demonstrates strong anti-static function. In addition, SWCNT & APT (Ammonium Para Tungstate ) is added tosignificantly improve photocatalyst, adhesion, chemical resistance and hard coat properties, enabling coating on solar
panels without reducing VLT.
Due to antistatic properties, dirt such as yellow sand and carbon does not adhere easily, making it ideal for the
Middle East and desert areas where the surface is scraped by sand. In addition, SWCNT, which has 10 times thethermal conductivity of aluminum, and the super-hydrophilic effect, are effective in promoting deicing in winter.
◆ Mechanism of antistatic/super-hydrophilic antifouling coating

Ultra-thin water film (water droplet
contact angle of 5° or less)= super hydrophilic film

100 to 200 nanoclass silica is used on the surface of the glass substrate to create an
uneven surface and create a base coat that always creates a super-hydrophilic film.
They are used as a 100% inorganic glue that adheres to the base material.
A coating film of tin oxide is formed on top of it, and by adding antistatic (antistatic)
function, it becomes difficult for dirt to adhere.
By adding APT and single-walled CNT to SGB, adhesion, weather resistance, andchemical resistance can be improved, and the antistatic function can be greatly
improved.
It is the world's first coating technology created by cutting-edge nanotechnology.

Superhydrophilicity by fractal theory
v

v

v
v

v

v
v
v

v
v

v

v
v

Substrate：PV panel surface, Glass, Mirror and so on

cvv

Silica：Adhesion＆ Super-Hydrophilic

Tin oxide ：Antistatic

APT： Photocatalyst
SWCNT： Improved antistatic function

Evaluation test
Solar self-maintenance coat CNT performance evaluation
solvent
Antistatic（surface resistivity）（Humidity 25~50％）

MethanolWeather resistance test results by a listed glass
manufacturer Conducted in May 201310 ４ Ω/□Superhydrophilic (glass)

Water droplet contact angle 10° or lesstransparency

No change

Surface hardness (wear resistance)

７H or more

Ease of installment

Effortless and easy

Adhesion to substrateglass, metal, tile, etc.

Frictional

lowTransmittance after application

Maintain transmittance

Normal glass application

Maintain transmittance

１, Strong anti-static function
２, Normal temperature quick drying
3, super hydrophilic

４, hard film

Uncoated

After the test

5.8E+09

90.3

92.9

Contact angle (°)-

0.0

Surface resistance（Ω/□）-

7.5E+08

Visible light transmittance (%)

-

92.2

Contact angle (°)-

3.3

Visible light transmittance (%)

Evaluation test
■Weathering test content
・Weathering test of 1,000 hours at 85% humidity under 85 ℃ room
temperature＝10～15 years equivalent（ Weathering test of strict criteria todetermine whether to adopt as processed products ）・It checks the following three items degradation situation of the membranesurface by the elution of sodium ions.
① Surface resistance value = antistatic effect② Visible light transmittance= transparency ③ Contact angle = super-hydrophilic■ Acceptance criterion
Test results
judgment10Ω/□・ Surface resistance value : less than １０ ⇒ 10

5, chemical resistance-

Surface resistance（Ω/□）
Before the test

SSMC

9Ω/□

～１０

８Ω/□

・ Visible light transmittance :More than ９０％⇒ 92.9％～92.2％ Pass ◎6, De-icing promotion function

・ Water droplet contact angle :Less than ２０° ⇒ 00°～ 3.3°

７, High transparency/low refraction■ Conclusion ：As for application market,
it is passed weathering test equivalent to 10 ~15 years

８, Ultra weather resistant

Pass ◎

Pass ◎

Causes of dirt
Dust, iron powder, oxide
Carbon, coal ash, smoke, exhaust gas
Pollen, sap, oil stains
Animal droppings, carcasses of insects
NOX, SOX, Acid rain, Degradation due tochemical change

Solutions

Function/Performance

Anti-Static

Suppress adhesion of inorganic stains and organic
stains that cannot be decomposed

Super-Hydrophilic

Make it easy to remove dirt that adheres and isdifficult to remove with rainwater

Chemical resistance,
hard coat property

Strongly to strong acid and alkali, a hard coat, andeasy to clean.

100% inorganic film

100% inorganic coating suppresses deterioration

Deterioration fading , shape deterioration
due to ultraviolet rays
Stain caused by mold
Degradation and fading due to heat andoxidation

Requirement for Anti-fouling coating?
・Reduce the adhesion of dirt, also easy to fall attached dirt
・When compared to the cost of cleaning, there is a merit of cost・High-transparent and does not impair the texture of the base material
・Inorganic 100%, there is a chemical resistance, excellent durability and environmental resistanceWash away the dirt in the rainwater with super-hydrophilic effect
Super hydrophilic means less than 10 degree of water angle to the substrate.
Water droplets remain as they are on the untreated surface, But they will seep into the layer
under the fouling on the hydrophilic surface, thus removing it. The water-repellent surface only
repels the water, and has no function to clean itself.

Difference of water angle

Super HydrophilicRainwater repellent

W a t e rr e p e l l e ntsuper hydrophilic

S u p e r
H y d r o p h i l i c

Substrate

Water drop

Rain enter
the dirt surface
Dirt

Easy cleaningWater drop contact angle

Water-repellent:
Water is rolling on the dirt.

When Water drop contact angle is small, the dirt is easy to take off.
Water drop contact angle

Substrate
Super water-

Water repellent

Hydrophilic

Super hydrophilic

repellent 110～180°

70～100°less than 40°

less than10°

Painting

Water drop angle（°）

Dirtiness by water drop angle

Exterior material of the waterrepellent: general organic coating film,
etc.
Hydrophilic:
water is spread on a flat
Water enters the bottom of the dirt

Teflon110～115

Easy to take off the dirt

Fluorine resin paint100～105

Easy to adhere the dirt

Silicone paint100～105

Easy to adhere the dirt

Acrylic urethane paint85

Easy to adhere the dirt

NOF Bell clean paint30～40

Difficult to adhere the dirt

Titanium oxide coating～10～

Photo catalyst/Super
hydrophilic

Hydrophilic exterior materials: tile,

SUPER GLASS BARRIER

Less than 3～5

Antistatic/Super hydrophilicstone, etc.

Importance of antifouling coating for solar panels
ソーラーパネルの防汚コーティングの重要性
Currently, the photovoltaic power generation market is rapidly spreading throughout Japan and around the world. In particular,
solar power generation facilities are under construction mainly in the Middle East with an average sunshine duration of 12 hours ormore (5.5 hours in Japan). However, there is a problem of a decrease in the amount of power generation due to sand contamination
because there is a lot of sunshine hours = a desert area where it does not rain. Therefore, in order to maintain power generation
efficiency, the panel is always cleaned, and if it is not cleaned, the amount of power generation will be reduced by 20% due to sandcontamination. (A decrease of 16% is also shown in the California area of the United States.) In addition, the AR coating (Antireflection Coat) for increasing the transmittance of the solar panels made in China gradually decreases from the third year, and thepower generation efficiency decreases accordingly. This time, we have developed a ＰＶ-AR UP Coat with an AR ratio of 2 to 3%,
which is effective in solving the above problems and has an anti-static and super hydrophilic function that is hard to get dirty.

The decrease in power generation due to dirt is 5% to 10% in Japan. 10% to 20% in China and Southeast Asia, 10% to 30% in the
Middle East

After 10months
Uncoated

CoatedIt can be confirmed that the area
where the antistatic antifouling coat
is applied is effective against dirt
caused by yellow sand.

Uncoated

CoatedIn the desert area where it doesn't rain like the panel in the left picture above, the air is a dry and thesand is charged and easy to adhere. Solar panel glass is required to have a surface that is difficult toadhere.
Also, regular cleaning maintenance makes it easier to remove dirt due to the super hydrophilic effect,
shortening cleaning time, reducing water usage fees, and using detergents.
Therefore, there are many maintenance benefits by reducing the detergent cost and coating.

Decrease in power generation efficiency due to dirt on the solar panel
In Europe, it has been announced that the decrease in power generation efficiency due to dirt is up to
9.3% per year. In China, Southeast Asia, and the Middle East, even more contamination is expected toreduce power generation efficiency by more than 10% annually.
Academic conference presentation of improvementof 10% or more in demonstration test in Egypt
Efficiency drop due to contamination on the module surface

Contamination by Dust

Contamination by Yellow sandContamination by rain

Contamination by bird drop

Output drop due to module contamination

13

Up to 9.3% reduction in power generation output due
to contamination

Prevention of deterioration in power generation efficiency due to dirt on solar panels &measures to reduce regular cleaning costs

As a measure to reduce power generation efficiency due to dirt adheringto the surface of the solar panel and to reduce maintenance cleaning
Strong antistatic, antifouling, super hydrophilic self-cleaning coat
① Even in regular cleaning operations, the ultra-hydrophilic self-cleaning effect makes it possible to simply washwith water without the need for detergents, and the reduction in the number of cleanings also reduces costs.
② Depending on the region and environment, the power generation efficiency of a solar panel can be
reduced by contamination.
③ Solar panels are installed at a low angle and tend to adhere to bird droppings, yellow sand, pollen, etc.,
so the coating surface of the coating material has an antistatic function and a hard coat to increasechemical resistance. Tungsten oxide and SWCNT are added. Corresponds with "Solar Self-Maintenance
Coated CNT".
④By using nanomaterials with low refraction materials, the visible light transmittance of the solar panel does
not decrease even if it is applied, so the power generation efficiency does not decrease. It is a patented
product that has a strong antistatic function and super hydrophilic function without reducing the transmittancewhen coated with Solar Self-Maintenance Coat CNT.

Uncoated
Uncoated

CoatedCoatedConfirmation of De-icing promotion effectafter 3days of 1,000㎡ coating in China
Snow surface becomes a lump, it was easy to slip off.
ReasonIts function is effectively demonstrated and dust and the like in the air hardly
adhere to the surface. In addition, even if it gets dirty, it is possible to self clean
the surface stain due to rainwater or the like due to the superhydrophilic function.
When water is applied to the uncoated surface, it is in a water repellent state, andthe dirt becomes a water spot remaining in the polka dots. If this is repeated for along time the surface becomes dirty,Resulting in a decrease in power generation
efficiency.Since the coated surface is in a superhydrophilic state with a contact
angle of water of 5 degrees or less,It can easily wash away. Therefore, it isdifficult for water spot to be formed, and reduction in power generation efficiency
can be reduced.

Accelerated dissolution test

CoatedUncoated

Prepare a glass with halfof this product appliedand half unapplied, put
it in a freezer withwater.
Freeze the coatedsurface as a thin film. →It is easy to dissolve
The uncoated surface
freezes as a lump. →hard to melt
I could confirm theresult.

Freeze in thinmembraneCakefreezing

CoatedUncoated

Already Melt

Still ice

The Data of PV Plant in Taiwan is measured from Oct,2017 until
Sep,2019■Place： PV Plant in Taiwan■Measuring Target：18 pcs of solar panels in 1 row
in the middle■Purpose：
Six rows of solar panels were prepared and only one middle row
was coated. The power generation amount of each string wasmeasured every day. The measurement method was based on theamount of power generated in a pre-coated string. Compare theremaining five uncoated columns with the amount of power
generation increased or decreased from the reference amount of
the coated panel.

■RecordAnti-fouling Coat was applied in the factory in June 30th, 2017
PV panels was installed on August 10th, 2017
Power generation and Electricity sales started at the end of
September 2017.
Measurement of power generation started in October 2017.

16

Measurement data from October 2017 to September 2019: Measurement record for about 2 years

First year : 6.03% Annual average

Second year : 5.64% Annual average

Date

Difference in power
generation efficiency (%)

Date

Difference in power generation
efficiency (%)

Oct, 2017

2.89%

Oct, 2018

4.61%

Nov, 2017

8.83%

Nov, 201810.83%

Dec, 201717.75%

Dec, 2018

7.37%

Jan, 201810.85%

Jan, 201913.53%

Feb,2018

12.9%

Feb,2019

5.16%

Mar, 2018

5.97%

Mar, 2019

6.03%

April, 2018

3.23%

April, 2019

5.04%

May, 2018

1.26%

May, 2019

5.54%

June,2018

2.7%

June,20194%

July, 2018

2.56%

July, 2019

1.81%

Aug, 2018

2.2%

Aug, 2019

2.63%

Sep, 2018

1.25%

Sep, 2019

1.2%

17

Applied for 4000sqm in Tochigi, Japan
Step① Glass Cleaning

Step②Wash with water
and wipe off

Step③Application

Step④Dry and storage

Applied for 198pc panels(508.8sqm)

Step②Wash with water
and wipe off

Step③Application

18

Installment record
100 sqm in Ibaraki, Japan

1500 sqm in Osaka, Japan
1000pc of panels

310 sqm in Kagoshima, Japan

162 sqm in Korea
100pc of panels

70 sqm in Kagoshima, Japan

Applied in Thailand

CoatedUncoated