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About product and suppliers:
        Alibaba.com offers 24,478 underlay products. About 37% of these are flooring accessories, 16% are waterproof membrane, and 1% are wood flooring. 

A wide variety of underlay options are available to you, such as silent underlays, moisture-proof underlay, and flooring trims. You can also choose from free samples, paid samples. 

There are 24,208 underlay suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Malaysia, and Turkey, which supply 97%, 1%, and 1% of underlay respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 6,220 with ISO9001, 2,224 with ISO14001, and 1,033 with Other certification.