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About product and suppliers:
        Alibaba.com offers 1,257 dn series products. About 10% of these are valves, 1% are flanges. 

A wide variety of dn series options are available to you, such as butterfly, ball, and gate. You can also choose from manual, pneumatic, and hydraulic. As well as from brass, casting, and stainless steel. And whether dn series is medium pressure, low pressure, or high pressure. 

There are 1,257 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 North America. 

You can ensure product safety by selecting from certified suppliers, including 591 with ISO9001, 189 with Other, and 34 with ISO14001 certification.