As a professional manufacturer of sodium hydrosulphide and sodium sulphide in China, we have experienced technicians, advanced manufacturing equipments and complete testing method. Our product quality can meet international standard. Our other main products are potassium nitrate, calcium nitrate, magnesium oxide, magnesium hydroxide, magnesium sulphate, barium chloride, barium sulphate, sodium sulphite, sodium bisulphite, and so on.