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About product and suppliers:
        Alibaba.com offers 44,390 damper products. About 14% of these are hvac systems & parts, 6% are other furniture hardware, and 2% are valves. 

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

There are 43,418 damper suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Japan, which supply 97%, 1%, and 1% of damper respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 13,510 with ISO9001, 6,675 with Other, and 2,499 with ISO/TS16949 certification.