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About product and suppliers:
        Alibaba.com offers 330,885 membrane products. About 11% of these are waterproof membrane, 5% 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 328,546 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 Oceania. 

You can ensure product safety by selecting from certified suppliers, including 113,030 with ISO9001, 35,957 with ISO14001, and 34,852 with Other certification.