... group including chemical plant, silicon plant, silica hydrated plant, international trading company, private sea port. And next year, our group will ... between Tangshan Sunfar Silicon and OCI (SK).Tangshan Sanyou International Industry Co., Ltd is one of the biggest trading ... class agentYou are welcomed to visit our plant and company.Contact information:Business manager: Anita CaoTel:86-315-3195833Fax ...