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About product and suppliers:
        Alibaba.com offers 8,138 trench drain products. About 38% of these are metal building materials, 5% are other construction & real estate, and 2% are drains. 

A wide variety of trench drain options are available to you, such as ductile iron, stainless steel, and galvanized sheet. You can also choose from free samples, paid samples. 

There are 7,739 trench drain suppliers, mainly located in Asia. The top supplying countries or regions are China, Turkey, and Malaysia, which supply 99%, 1%, and 1% of trench drain respectively. 

Trench drain products are most popular in North America, Western Europe, and Eastern Asia. 

You can ensure product safety by selecting from certified suppliers, including 4,471 with ISO9001, 1,129 with ISO14001, and 812 with OHSAS18001 certification.