Cartridge Heater, Film Heater, Silicone Rubber Heater manufacturer / supplier in China, offering 12V 24V DC 1000W 500W Tubular Immersion Water Heater Element DC 48V for Solar Panels with Thermostat, 12V 24V 48V DC Dual Valtage Immersion Electric Water Solar Heating Elements with Temperature Control, Stainless Steel Electric Immersion 1500W 48V Solar Water Heating Element with Thermostat and so on.