Potash fertilizers are mineral fertilizers containing potassium (K₂O) to increase crop yields and plant resistance to drought and diseases. Potassium sulfate (SOP, K₂SO₄, 50–52% K₂O) is a chlorine-free fertilizer for chloride-sensitive crops (grapes, tobacco, potatoes, tomatoes, citrus, greenhouses). Potassium chloride (MOP, KCl, 60% K₂O) is the main potash fertilizer for cereals, oilseeds, and sugar beets. Available in granular and powder forms. GOST 4568-95 "Potassium chloride", GOST 4145-74 "Potassium sulfate". Packaging: big bags, 25–50 kg bags, bulk. Export documentation: Safety Data Sheet (SDS/MSDS), Certificate of Analysis (CoA), Certificate of Origin. Export supplies to China, EAEU, Middle East, Southeast Asia.