1. High heat shrinking efficiency, suitable for different and irregular round bottles, square bottles, flat bottles, etc. 2. The whole machine is insulated by three layers to reduce heat loss. It is waterproof and made of stainless steel 304. 3. Equipped with thermometer and pressure gauge, steam pressure and shrinkage temperature at a glance, easy to operate 4. The steam inlet valve is equipped with a dial to save the start time of each shift operation. 5. Each nozzle on both sides of the machine can adjust its upper and lower/inside position and jet direction. 6. The front and rear ends of the machine are equipped with inlet and outlet guards to reduce steam leakage and heat preservation. 7. Install a water tray at the bottom of the whole fuselage to collect concentrated discharge of condensed water to prevent the site from being wet.