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About product and suppliers:
        Alibaba.com offers 82,854 air vent products. About 10% of these are hvac systems & parts, 6% are valves, and 1% are pipe fittings. 

A wide variety of air vent options are available to you, such as hvac systems, ventilation, and radiator. You can also choose from free samples, paid samples. 

There are 82,478 air vent suppliers, mainly located in Asia. The top supplying countries or regions are China, Taiwan, China, and Vietnam, which supply 98%, 1%, and 1% of air vent respectively. 

Air vent products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 19,953 with ISO9001, 6,092 with Other, and 2,939 with ISO14001 certification.