Tubular Heater, Cartridge Heater, Ceramic Heater manufacturer / supplier in China, offering 10X300mm 230V 800W Built in Thermocouple Cartridge Heater, 235W 400W 6mm X 288mm Electric Heating Rod Cartridge Heater, 12V 24V 48V Stainless Steel Air Finned Heater Rod Electric Cartridge Heater and so on.