Auspicious and chang chemical industry was founded in 2000, is a high-tech enterprise with independent brand, mainly devotes to the surface treatment chemicals development, production, sales and technical service, has successfully developed four categories scale high quality products: electroplating intermediates: nickel plating intermediates galvanized copper with intermediate intermediate fine chemicals: 1, PS EDTP alkali type sulphuric acid chromium nitric acid water soluble resin chromium