Single-end (single-head) heating tube for media where two-end wiring is impossible, e.g. molds and machines (die, medical, plastic sealing, tobacco machines). Used for drying wood/paper/paint, melting nitrate and low-melting alloys, building heating, infrared radiation, lab/industrial ovens, oil/water/acid heating, distillation, food baking, plastic/rubber molding, medical sterilization, motor varnish baking, and household appliances. Operating -20~+60°C/<80% RH, 1500V cold / 1000V hot withstand, leakage <0.5mA, insulation >30MΩ, power tolerance +5%/-10%, surface load up to 25W/cm².