New Source Holding limited (Simple " NSS ") is a professional manufacturer and leading wholesale of metal sulface treatment chemicals in china,it has its own factory in shanghai ,our factory was founded in 2006. Our main products are chromium nitrate,chromium chloride,Chromium Phosphate ,Chromium Sulfate, ,nickel acetate,cobalt nitrate, cobalt acetate,and so on . NSS is serious supplier .We always supply high quality products to all customers,and bulit trust business relationship with them for a long time.Our factory has a strict rule for the production according to ISO9001:2008 . NSS has more than 15 years international trade experience and export more 20 countries ,we coopration with many leading company in asia and world,such as Japan,South Korea , Taiwan, Thailand , Australia, Canana , Uk , USA, and soon on.