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About product and suppliers:
        Alibaba.com offers 442 grey oyster mushroom products. About 87% of these are fungus, 60% are oyster mushrooms, and 2% are shiitake. 

A wide variety of grey oyster mushroom options are available to you, such as free samples. 

There are 442 grey oyster mushroom suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of grey oyster mushroom respectively. 

Grey oyster mushroom products are most popular in Southeast Asia, Domestic Market, and Oceania. 

You can ensure product safety by selecting from certified suppliers, including 161 with Other, 65 with ISO22000, and 44 with HACCP certification.