... Co.,Ltd is one of the best China potassium humate 70%, potassium humate flake, powder potassium humate, crystal humic potassium 70%, drip irrigation humic fertilizer, shiny crystal ... , excellent water solubility potassium humate manufacturers, welcome to wholesale high-quality products from us.SpecificationAppearance: Crystal/Powder/Flake Organic Matter: 85% Color: Shiny ...