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About product and suppliers:
        Alibaba.com offers 9,982 bio filter products. About 67% of these are water treatment, 3% are water filters, and 1% are pool & accessories. 

A wide variety of bio filter options are available to you, such as free samples, paid samples. 

There are 9,897 bio filter suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Malaysia, and South Korea, which supply 97%, 1%, and 1% of bio filter respectively. 

Bio filter products are most popular in North America, Domestic Market, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 3,990 with ISO9001, 1,402 with Other, and 81 with ISO14001 certification.