GRINM Semiconductor Materials Co., Ltd. engages in the research, development, production, and operation of silicon materials. It provides related technology development, technology transfer and technology consulting services. Its products include silicon single crystals and wafers for integrated circuits, silicon wafers for power integrated circuits, fused silicon single crystals and wafers, and ultra-large diameter silicon wafers for integrated circuit process equipment, which are used in integrated circuits, power devices, solar energy, and other fields. The company was founded on June 21, 2001 and is headquartered in Beijing, China.