Shanghai Vitalyield Biotech Co., Ltd. is a specialized manufacturer and supplier for providing humic acid & humate products and better service to global customers. We are committed to R&D, manufacture, sales and service for high quality mineral source (Leonardite) humic acids based products. The main products include series of Humic Acid, Sodium Humate, Potassium Humate, Potassium Fulvate, Fulvic Acid, Boron Humate, and so on.