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About product and suppliers:
        Alibaba.com offers 2,170 filter aid products. About 42% of these are perlite, 3% are filter aids, and 1% are water treatment. 

A wide variety of filter aid options are available to you, such as expanded perlite, raw perlite. You can also choose from free samples, paid samples. 

There are 2,138 filter aid suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Thailand, which supply 97%, 1%, and 1% of filter aid respectively. 

Filter aid products are most popular in Domestic Market, Eastern Asia, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 195 with Other, 193 with ISO9001, and 84 with ISO13485 certification.