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About product and suppliers:
        Alibaba.com offers 2,034 vent tube products. About 4% of these are hvac systems & parts, 4% are injection & puncture instrument, and 2% are plastic tubes. 

A wide variety of vent tube options are available to you, such as pvc, plastic, and pe. You can also choose from api, astm, and gb. As well as from free samples, paid samples. 

There are 2,053 vent tube suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Pakistan, which supply 99%, 1%, and 1% of vent tube respectively. 

Vent tube products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 553 with ISO9001, 234 with Other, and 151 with ISO13485 certification.