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About product and suppliers:
        Alibaba.com offers 1,713 rainwater drainage system products. About 41% of these are other plastic building materials, 13% are water treatment, and 6% are metal building materials. 

A wide variety of rainwater drainage system options are available to you, such as casting, forged. You can also choose from square, hexagon. As well as from elbow, tee, and coupling. And whether rainwater drainage system is plastic, steel, or stainless steel. 

There are 1,713 rainwater drainage system suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Italy, and Vietnam, which supply 99%, 1%, and 1% of rainwater drainage system respectively. 

Rainwater drainage system products are most popular in Africa, Southeast Asia, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 1,162 with ISO9001, 75 with Other, and 53 with ISO14001 certification.