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About product and suppliers:
        Alibaba.com offers 11,238 humic acid powder products. About 87% of these are organic fertilizer, 3% are potassium fertilizer, and 1% are acidity regulators. 

A wide variety of humic acid powder options are available to you, such as humic acid, manure, and potassium humate. You can also choose from granular, powder, and liquid. As well as from quick, slow, and controlled. And whether humic acid powder is free samples, or paid samples. 

There are 11,238 humic acid powder suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of humic acid powder respectively. 

Humic acid powder products are most popular in Southeast Asia, Mid East, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 3,465 with ISO9001, 384 with ISO14001, and 225 with FSC certification.