In the past few years, our company absorbed and digested advanced technologies both at home and abroad. Meanwhile, our company staffs a team of experts devoted to the development of Sodium Sulfide Formula, Sulfide material , Hydrated Withnotlessthan30%Water , Potassium Hydroxide Corrosive ,polyacrylamide concentration . We guaranteed quality, if customers were not satisfied with the products' quality, you can return within 7days with their original states. The product will supply to all over the world, such as Europe, America, Australia,Swedish , Sydney ,Jordan , Czech Republic .Certainly, competitive price, suitable package and timely delivery will be assured as per customers' demands. We sincerely hope to build business relationship with you on the basis of mutual benefit and profit in the very near future. Warmly welcome to contact us and become our direct cooperators.