1.steel frame with sandwich panel 2.anti-theft and antisepsis 3.steel base 4 save freight 5 ISO factory product 20' MOVABLE CONTAINER SHOP Referential Material List Characteristic 1. easy to install--labor-saving and time-saving 6 workers can finish two units in one day. 2. removable------ it can be moved from one place to another by trunk as a whole. 3. heat-insulated-- 75mm EPS sandwich panel ...