cartridge heater 1,material:stainless steel 304/321/316 2,nickel chrome resistance wie(Ni 80%) 3,guarantee time: one year Cartridge heaterOur company ... Band Heaters, Ceramic Band Heaters, Strip Heaters, Tubular Heaters, Cartridge Heater, Hot Runner Heater & Bushes, Manifold Heaters, Infrared Heaters, Cast-in Heaters, Roller Heaters ...