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About product and suppliers:
        Alibaba.com offers 3,852 drainage channel products. About 23% of these are metal building materials, 9% are other construction & real estate, and 7% are drains. 

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

There are 3,852 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 Eastern Asia. 

You can ensure product safety by selecting from certified suppliers, including 2,238 with ISO9001, 407 with Other, and 187 with ISO14001 certification.