Most of the tubes manufactured today come from 6 factories.
The huge majority are from three: New Sensor's factory in Xpo-pul (the old Reflektor factory), Shuguang in China, and JJ in Slovakia.
Then comes: Psvane in China, Emission Labs in Czech, and Tiajin in China.
There are another 4, 5, or 6 small factories which make specialty tubes.
Svetlana made some very good tubes, including the famous Winged C EL34. But they closed in 2012. As mentioned earlier, EI closed around 2003.
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