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About product and suppliers:
        Alibaba.com offers 1,264 dn series products. About 10% of these are valves, 1% are pipe fittings, and 1% are flanges. 

A wide variety of dn series options are available to you, such as din, gb, and bs. You can also choose from flange, welding. As well as from stainless steel, iron, and pp-r. And whether dn series is elbow, tee, or coupling. 

There are 1,264 dn series suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of dn series respectively. 

Dn series products are most popular in Domestic Market, Mid East, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 588 with Other, 561 with ISO9001, and 102 with ISO14001 certification.