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About product and suppliers:
        Alibaba.com offers 69,552 vacuum tube products. About 11% of these are solar collectors, 2% are pipe,drainage tubes & containers, and 1% are injection & puncture instrument. 

A wide variety of vacuum tube options are available to you, such as free samples, paid samples. 

There are 68,977 vacuum tube suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Vietnam, and Turkey, which supply 98%, 1%, and 1% of vacuum tube respectively. 

Vacuum tube products are most popular in North America, Domestic Market, and South America. 

You can ensure product safety by selecting from certified suppliers, including 33,557 with ISO9001, 11,734 with Other, and 4,760 with ISO14001 certification.