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With productive humibase 50 factory, Xi'an Naturetech Co.,Ltd is one of the best China humibase 50 manufacturers, welcome to wholesale high-quality powder humic acid, humic acid leonardite, base manure humic acid, humic acid 50% granular, humic acid soil application, powder leonardite humic acid, humic acid agriculture use, slow release organic fertilizer from us.SpecificationAppearance: Black Brown G/P          Organic Matter: 60% Water Solubility: Insoluble                   Humic Acid: 50% PH Value: 4.0-6.0                                Moisture: 20-25%  Benefits- Act as soil conditioner - Stimulate plant growth - Increase the organic matter of soil - Reduce pesticide residue - Increase the capacity of water holding and cation exchange  ApplicationSoil application  Package25kgs Paper Bag & Customized