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About product and suppliers:
        Alibaba.com offers 848 guano products. About 63% of these are organic fertilizer, 5% are phosphate fertilizer, and 1% are compound fertilizer. 

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

There are 532 guano suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Indonesia, and Vietnam, which supply 76%, 6%, and 3% of guano respectively. 

Guano products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 188 with ISO9001, 137 with ISO14001, and 32 with Other certification.