Function:
1. High speed in opening and closing, up to 2m/s or more
2. Insulation feature: heat insulation; noise insulation, smell insulation, wind and dust insulation, etc.
3. Door slat: made of high quality PVC fabric or fibre materical.
4. Different colors of the PVC fabrics are available, suitable for different usage.
5. Safety: SRD Automatically reset devices