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About product and suppliers:
        Alibaba.com offers 3,345 drainage channel products. About 21% of these are metal building materials, 13% are drains, and 10% are other construction & real estate. 

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

There are 3,345 drainage channel suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of drainage channel respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 1,629 with ISO9001, 436 with Other, and 160 with ISO14001 certification.