Founded in 2000.Changsha weichuang chemical co.ltd, is a professional mondern chemical manufacturer and supplier of Sodium Metabisulfite(SMBS), Sodium Thiosulphate(Sodium Thiosulfate), Sodium Sulphite and Ferrous Carbonate etc. which consists of two plants: No.1 chemical plant and No .2 chemical plant, occupying 28000 square meter, with fixed assets of RMB12 million and 210 employees. We enjoyed a good location, the plants are closely to JINGGUANG railroad and JINGZHU highway. It only t