With productive humibase 70 factory, Xi'an Naturetech Co.,Ltd is one of the best China humibase 70 manufacturers, welcome to wholesale high-quality powder humic acid, humic acid leonardite, base manure humic acid, humic acid soil application, humic acid 70% granular, powder leonardite humic acid, humic acid agriculture use, slow release organic fertilizer from us.SpecificationAppearance: Black Brown Powder