We PT.CHORI are authorized distributor of Indonesian Potassium Sulfate supplier. Product : Potassium Sulfate (Cas No.1312-73-8) SOP Manufacturers : Indonesia Suppliers Major supplier of Sulfur salt. Strength : 1. Indonesia Source : The production cost is much more competitive than other countries. We could offer best price to you. 2. Excellent Quality : They could provide Low Cl Grade as well as standard grade for fertilizer. 3. Excellent Response : They have supplied their product, not only SOP but also others in the world. They could work together you as you want. Please feel free to inquiry to me.