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About product and suppliers:
        Alibaba.com offers 67,942 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 vacuum solar collector, pressurized, and manifold collector. You can also choose from solar thermal, water heater, and air conditioning system. As well as from glass, copper, and pvc. And whether vacuum tube is free samples, or paid samples. 

There are 67,375 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 33,024 with ISO9001, 11,195 with Other, and 4,716 with ISO14001 certification.
        
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