Shanghai Liangren Chemical Co., Ltd. (Simple "LR")was founded in 1987. We are a professional manufacturer and leading wholesale of chemical products, and our main products are chromium salts, nickel salts, copper salts, cobaltous salts, other salts and zinc, more products will update. LR has more experience for production and international wholesales for chemical products. Quality is first, we always supply high quality products to all customers,and bulit trust business relationship ...   |