... NPK Compoud FertilizerSGS INSPECTION&ISO CERTIFICATE High Qualitiy Potassium Sulfate Fertilizer(We can make up any purity of each ... element you requested) Basic Properties: Potassium Sulfate White crystalline, particle or powder. Taste bitterThe basic raw ... all kinds of potassium, Agriculture used as potash, Potassium sulfate in industry is also used in glass, dye, spices, ...