Organic fertilizer of Factory in south China. Organic fertilizer of Humic acid for soil fertility. Natural Leonardite Source We are manufactory for production of leonardite humic acid,potassium humate,sodium humate fertilizers since 2000.And our commodities are of high quality. Magnesium Humate is a high polymer heterogeneous aromatic hydroxyl salt. It is black granular solid or powder, slight ...
