Tianjin win of rare chemical reagent factory won the top enterprises, tianjin advanced enterprise of the industry and trade integration of five-star production units. With a large number of experienced professional technical personnel. 2001 our factory production of nitric acid silver meet international standards, and was awarded the tianjin city products market adopt international standard certificate. In the purification and processing gold, silver, cobalt, nickel, platinum and rhodium, palladium, iridium, bismuth, antimony and materials with advanced equipment and perfect testing means.