Qingdao Siken Silicon Material Import and Export Co., Ltd., formerly known as Shanghai Siken Silicon Powder Material Co., Ltd., was established in 2003. For 18 years, the company has been committed to the R&D, production, application and sales of silicon powder. We have our own factories in Inner Mongolia, Gansu, Guizhou, Sichuan and Yunnan, and sales branches and warehouses in Zhengzhou, Yangquan, Shanghai, Yixing and Guangzhou, respectively, to facilitate the use of silica powder by local refractory enterprises