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About product and suppliers:
        Alibaba.com offers 434 drainage grille products. About 47% of these are metal building materials, 14% are cast & forged, and 8% are other fiberglass products. 

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

There are 433 drainage grille suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Turkey, and Japan, which supply 97%, 2%, and 1% of drainage grille respectively. 

Drainage grille products are most popular in North America, Southeast Asia, and South America. 

You can ensure product safety by selecting from certified suppliers, including 156 with ISO9001, 57 with Other, and 49 with ISO14001 certification.