Kingeagle's vacuum tube adopt dry absorb type selective coating with lower remittance,it solved the problem of normal tube having not good curve of emittance, when the temperature higher, the remittance higher, which reduce the efficiency of the tube....
Solar Water Heater, Solar Panel, Solar Energy Geyser, Vacuum Tube...
The DBC substrates basis is a ceramic isolator (currently aluminium oxide or aluminum nitride), to which pure copper is applied in a high-temperature melting and diffusion process, and which is then connected adhesively to the ceramics. This gives rise...
DBC substrate...
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