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About product and suppliers:
        Alibaba.com offers 3,792 vacuum tube size products. About 3% of these are solar collectors, 1% are injection & puncture instrument, and 1% are paste material. 

A wide variety of vacuum tube size options are available to you, such as vacuum solar collector, evacuated tube, and pressurized. You can also choose from solar thermal, water heater. As well as from copper. 

There are 4,955 vacuum tube size suppliers, mainly located in Asia. The top supplying countries or regions are China, India, and Thailand, which supply 99%, 1%, and 1% of vacuum tube size respectively. 

Vacuum tube size products are most popular in United States, Saudi Arabia, and Malaysia.