Humic Acid, Potassium Humate, Sodium Humate manufacturer / supplier in China, offering Increase Plant Resistance to Environmental Stresses Sophyllum Algae Seaweed Fertilizer, Super Potassium Humate Water Soluble Fertilizer Humic Acid 70% /65% Humic Acid, Bio Fulvic Acid Brown Powder Bio Potassium Fulvate Brown Powder and so on.