This heater uses a carbon fiber heating wire for heating, which is free from electromagnetic interference and pollution, noise free, and heats up quickly. The packaging material uses quartz glass tubes, which have a very low coefficient of thermal expansion and extremely high thermal stability. They can withstand severe temperature changes without bursting. 3-tube heating, three power levels, high-end power 1800W, mid-range power 1200W, low-range power 600W, bottom knob switch operation. 120 minute mechanical timer switch, built-in mechanical dumping switch, automatically power-off protection when dumping. Temperature fuse protection. The plastic shell is made of heat-resistant VO grade flame-retardant PP. Top handle for easy movement.