We attend the COLD CHAIN EXPO at Shanghai New Expo Center recently. We demonstrate our Insulated Freezer High Speed Rolling Doors during this expo. Such door is made from 30mm thick sandwich curtain filled with rock wool inside. So it is with perfect thermal insulation. This can help reduce the heat loss after the door closed. And its high running speed can reach 2.0m/s. This can reduce the heat loss time during opening or closing when there is traffic through the door. This can reduce the heat loss during door working. With above two factors, such door can help save a lot of electricity cost in a cold room or cold storage warehouse. 

As a professional door manufacturer, we produce various kinds of industrial use doors, including pvc fabric high speed rolling shutter doors, aluminum spiral high speed fast rolling doors, industrial overhead sectional doors, roller shutter door, steel door, dock shelter or dock seal, hydraulic dock leveler, fire door, clean room door, sliding door, and impact traffic door, pvc fabric mega door, sliding hangar door. They are widely used in all kinds of industries, like food,  pharmaceutical, electronics, machinery, warehouse, and clean rooms.