Thyristor, Welding Diode, High Voltage Control Cabinet manufacturer / supplier in China, offering Disc Type High Volatage Thyristor SCR (KP 2500A/6500V), Sailton Brand Semiconductor Devices Copper Air-Cooler Heatsink Sf12 0.086c/W Thermal Resistance Screw Mounting for Large Power, Sailton Brand Semiconductor Devices Copper Air-Cooler Heatsink Sf14 0.086c/W Thermal Resistance Screw Mounting for Large Power and so on.