Thien Phu Phat STP Co., Ltd specialises in providing MgSO47H2O, CuSO4, Humic Acid from USA (65 – 70%), Potassium Humate Super Grade (60% 10K2O), Potassium Humate (50% ) and the production of ZnSO4, CuSO4, FeSO4, MnSO40 and other products. Thien Phu Phat STP Co., Ltd specialises in providing MgSO47H2O, CuSO4, Humic Acid from USA (65 – 70%), Potassium Humate Super Grade (60% 10K2O), Potassium Humate (50% ) and the production of ZnSO4, CuSO4, FeSO4, MnSO40 and other products.