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About product and suppliers:
        Alibaba.com offers 10,091 pneumatic union products. About 11% of these are pipe fittings. 

A wide variety of pneumatic union options are available to you, such as union, coupling, and cap. You can also choose from stainless steel, plastic, and copper. As well as from male, welding, and female. And whether pneumatic union is casting, or forged. 

There are 10,131 pneumatic union suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Malaysia, and Taiwan, which supply 99%, 1%, and 1% of pneumatic union respectively. 

Pneumatic union products are most popular in North America, Southeast Asia, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 7,839 with ISO9001, 357 with Other, and 137 with ISO14001 certification.