â?¢ Extremely high purity â?¢ Totally nutrition >=86%, but higher K2O content, >=35% â?¢ free of heavy metals, same as food grade, safe to crop and human â?¢ 100% water soluble, no any debris after water dissolved â?¢ dissolve very quickly in water, low salt index and low EC value, ideal fertigation and foliar fertilizer â?¢ Crops absorb more efficiently â?¢ price competitive â?¢ We test it in China Xinjiang, our product shows 3 time more efficiency than MKP crystal as foliar fertilizer on crops.