1. Different Colors 2. Material: Corrugated Steel 3. ISO9001:2000, TS/ISO16949:2002, 3C Certification 4. Germany Technology Refrigerated semi trailer: heavy truck for transporting goods that must be kept cold.Refrigeration unit: cooling apparatus.Vent door: movable panels used to regulate air intake.Clearance light: lights that indicate the form and dimensions of a vehicle.Upper side-rail: beam ...