Sodium Hydrosulphide, Sodium Sulphide, Sodium Sulphate Anhydrous manufacturer / supplier in China, offering Sodium Sulfide Yellow Flakes and Red Flakes (CAS 1313 - 82 - 2) Specially Formulated for Mineral Flotation in Mining Industry, High - Quality Sodium Sulphide Yellow Flakes and Red Flakes (CAS 1313 - 82 - 2) for Advanced Water Treatment and Purification, Sodium Sulfide Yellow Flakes and Red Flakes (CAS 1313 - 82 - 2) with High Reactivity for Leather Tanning and Preservation and so on.