Electronic Tubes, Magnetrons, Resistors manufacturer / supplier in China, offering RF Amplifier Tube 3cw20000h7 Power Triode Electron Tube (3CW20000A7, 3CW20000H3), Power Triode Tube RS3040cj Electron Tube Vacuum Valve for RF Heating Machine, Amplifier Tube Yu-148 Triode Used in Radio Equipment (3CX6000A7, 3CX4500F3) and so on.