Heated by stainless steel heating tubes, featuring a four-sided circulating hot air structure, with an electronic speed controller for adjustable rotation speed. Double-layer insulating panels prevent excessive surrounding heat. Imported high-temperature resistant insulating fabric significantly reduces heat loss. The conveyor chain employs solid roller shafts and is wrapped with high-temperature silicone tubes, capable of supporting heavy loads. Imported components ensure equipment stability. Designed specifically for the characteristics of PE film, it solves the bottleneck of previous heat shrinkage difficulties, becoming a savior for PE film outer packaging heat shrinkage.