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STW Co.,Ltd.


Takeshi TSUBOI (Mr.)
Year established
Postal (zip) code
Company address
19-13 Funairi Honmachi, Naka-ku,
Hiroshima City
Company PR
By using our company's thermal insulation glass, customers will be able to improve heating and cooling efficiency while also cutting energy costs.
Our company also specializes in a glass coating known as "Fumin coating." This clear and transparent glass coating can be applied to your current windows, allowing for a high level of visible light transmission (VLT) and insulation efficiency.
Fumin Coating absorbs and cuts infrared rays, which are high during the summertime, while also keeping room temperatures from rising too high. In the winter, Fumin Coating helps to prevent heat from escaping and allows the room to stay warm, while helping to prevent dew condensation. Finally, Fumin Coating blocks up to 90 percent of ultraviolet rays.
Clients need not worry about skin damage or other issues due to ultraviolet rays.

4700m2 of Fumin Coating was used on the windows inside the National Art Center, Tokyo

Applying coating to the outside of windows for a client in Hiroshima City

Major Products
Thermal insulation glass coating ("Fumin Coating")
Major Facilities/Equipment
Special Spraygun 2
Compressor 2
 Warm air specification
Technology Employed
Other manufacturing industry
Patented technology for a clear and transparent coating film that blocks ultraviolet and infrared rays and can be used with a spray gun.
Primary Area of Technical Expertise

Our clear and transparent glass coating has been received the Environmental Technology Verification from the Ministry of the Environment. Fumin Coating has been patented in nine countries and has received high praise from overseas. Fumin Coating is one like no other.

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