Supply from: SEPPES The door works by using a versatile PVC curtain and guides it up and down rapidly along aluminum alloy rails. Source from : SEPPES Structural Functions: Door panels encompass a metallic composite layer + polyurethane insulation layer, divided into sections for sliding and lifting. Normally utilized in https://portonipercapannoni13445.collectblogs.com/82534506/the-definitive-guide-to-warehouse-doors