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About product and suppliers:
        Alibaba.com offers 1,230 green roof drainage board products. About 40% of these are other earthwork products, 7% are plastic sheets, and 1% are sandwich panels. 

A wide variety of green roof drainage board options are available to you, such as free samples, paid samples. 

There are 1,230 green roof drainage board suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Turkey, and Vietnam, which supply 99%, 1%, and 1% of green roof drainage board respectively. 

Green roof drainage board products are most popular in Africa, Southeast Asia, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 1,223 with ISO9001, 560 with ISO14001, and 312 with OHSAS18001 certification.