Our enterprise since its inception, often regards solution excellent as enterprise life, continually strengthen output technology, enhance product high quality and continually strengthen organization total high-quality administration, in strict accordance using the national standard ISO 9001:2000 for 1310-73-2, Potassium Hydroxide Cleaning , sodium polysulfide , Sodium Hydrosulfide Solution ,Sodium Sulphide 9-Hydrate . We have deep cooperation with hundreds of factories around China. The products we provide can match with your different demands. Choose us, and we won't make you regret! The product will supply to all over the world, such as Europe, America, Australia,Morocco , Sri Lanka ,Greece , Malawi .We have 48 provincial agencies in the country. We also have stable cooperation with several international trading companies. They place order with us and export products to other countries. We expect to cooperate with you to develop a larger market.