Specifications prefab steel structure Standard GB ,AISI , ASTM , BS, JIS ,CE (DIN18800) Type light / heavy Commodityprefab steel structure SpecificationsStandard ISO 9001 : 2008 , GB ,AISI ... to cargo3, Reefer container can provide freezing condition as required4,,Structure application .ServiceManufacture ,inspection , design ,process guide ,install technology guide ,transportation ...