Our enterprise since its inception, usually regards product top quality as business life, repeatedly enhance manufacturing technology, make improvements to product excellent and continuously strengthen enterprise total high quality administration, in strict accordance with all the national standard ISO 9001:2000 for China Sodium Sulfide, Sodium Sulfhydrate , hydrogénsulfure de sodium hydraté , Sodium sulfidesolid ,Sodium Hydrosulphide 10/20/30ppm . we could solve our customer problems asap and do the profit for our customer. If you need good service and quality , pls choose us , thanks ! The product will supply to all over the world, such as Europe, America, Australia,British , Angola ,Israel , Portugal .The credibility is the priority, and the service is the vitality. We promise we have the ability to provide excellent quality and reasonable price products for customers. With us, your safety is guaranteed.