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About product and suppliers:
        Alibaba.com offers 5,896 downpipe products. About 3% of these are pipe making machinery, 2% are other metal & metallurgy machinery, and 1% are plastic film. 

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

There are 5,879 downpipe suppliers, mainly located in Asia. The top supplying countries are China (Mainland), United States, and Malaysia, which supply 98%, 1%, and 1% of downpipe respectively. 

Downpipe products are most popular in North America, Africa, and South America. 

You can ensure product safety by selecting from certified suppliers, including 801 with ISO9001, 207 with ISO/TS16949, and 141 with Other certification.