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About product and suppliers:
        Alibaba.com offers 332,563 membrane products. About 15% of these are waterproof membrane, 7% are water treatment, and 2% are geomembranes. 

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

There are 329,900 membrane suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Taiwan, which supply 98%, 1%, and 1% of membrane respectively. 

Membrane products are most popular in North America, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 127,217 with ISO9001, 43,894 with ISO14001, and 33,613 with Other certification.