Doujin Sangyo Co., Ltd.

Various optical glasses are used in the semiconductor industry. Also, since optical glass is a hard and brittle material, there...

• Boards & Circuit Boards

• Glass Substrates

In addition to being produced at a factory in Japan, we also outsource production to a Chinese manufacturer. Chinese manufactur...

• Semiconductor Manufacturing

• Silicon Wafers

Single crystal silicon ingot/Silicon Ingot In addition to manufacturing at our own factory in China, we also purchase from exce...

• Semiconductor Manufacturing

• Semiconductor Materials

Sapphire Ingot In addition to producing our products at our own factory, we also purchase from excellent manufacturers around t...

• Inorganic & Mineral Materials

• Fine Ceramics

Various optical glasses are used in the semiconductor industry. Also, since optical glass is a hard and brittle material, there...

• Boards & Circuit Boards

• Glass Substrates

Silicon carbide (SiC) or silicon carbide is a crystalline material in which carbon (C) and silicon (Si) are covalently bonded i...

• Diodes

• SiC Diodes

Sapphire Wafer In addition to manufacturing at our domestic factory in Japan, we also outsource production to excellent manufac...

• Inorganic & Mineral Materials

• Fine Ceramics

■Basic content ・Diameter: Φ2", Φ4", Φ6", Φ8" ・Thickness: 150µm, 350µm, 500µm, 600µm, 900µm, special specifications available ...

• Chemicals

• Silicon Carbide

We also carefully select and sell various grinding abrasives based on the technology and experience we have accumulated from pr...

• Machining / Machine Tools

• Abrasive Compounds

We also carefully select and sell various grinding abrasives based on the technology and experience we have accumulated from pr...

• Machining / Machine Tools

• Diamond Powder

We also carefully select and sell various grinding abrasives based on the technology and experience we have accumulated from pr...

• Machining / Machine Tools

• Diamond Powder

■Available sizes and quantities ・Φ2", Φ4", Φ6" ・25 sheets~/Lot ・100,000 sheets/month (supply capacity) ■Pattern example: (2...

• Inorganic & Mineral Materials

• Fine Ceramics