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About product and suppliers:
        Alibaba.com offers 527 black oyster mushroom products. About 74% of these are fungus, 61% are oyster mushrooms, and 2% are shiitake. 

A wide variety of black oyster mushroom options are available to you, such as shiitake, oyster mushroom, and pleurotus. You can also choose from raw, blanched, and chopped. As well as from whole, cap, and stem. And whether black oyster mushroom is brown, white, or black. 

There are 446 black oyster mushroom suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hungary, and South Africa, which supply 82%, 6%, and 5% of black oyster mushroom respectively. 

Black oyster mushroom products are most popular in Central America, South Asia, and South America. 

You can ensure product safety by selecting from certified suppliers, including 27 with ISO22000, 21 with Other, and 11 with ISO9001 certification.