Our firm since its inception, normally regards item top quality as company life, constantly make improvements to generation technology, improve product excellent and repeatedly strengthen organization total good quality management, in strict accordance with the national standard ISO 9001:2000 for Sodium Hydrosulfide Nahs Price, Non polyacrylamide , Disodium Sulfurothioate , Sodium Polyacrylamide ,sulfure de sodium hydraté . We are expecting to cooperate with you on the basis of mutual benefits and common development. We will never disappoint you. The product will supply to all over the world, such as Europe, America, Australia,Niger , New Zealand ,Mumbai , Qatar .We set a strict quality control system. We have return and exchange policy, and you can exchange within 7 days after receive the wigs if it is in new station and we service repairing free for our products. Please feel free to contact us for further information if you have any questions. We are glad to work for every client.