We retain improving upon and perfecting our items and repair. At the same time, we perform actively to do research and progress for China Sodium Hydro Sulfide and CAS No: 16 721-80-5, Sodium Nitroprusside , natriumhydrogensulfid hydratisiert , Sodium Hydrosulfide Formula ,hydrogénsulfure de sodium hydraté . We believe in quality over quantity. Before export of the hair there is strict quality control check during treatment as per international quality standards. The product will supply to all over the world, such as Europe, America, Australia,Denmark , Thailand ,London , Muscat .We are very responsible for all details on our customers order no matter on warranty quality, satisfied prices, quick delivery, on time communication, satisfied packing, easy payment terms, best shipment terms, after sales service etc. We provide one-stop service and best reliability to our every customers. We work hard with our customers, colleagues, workers to make a better future.