... is made by heavy duty door hinge, heavy duty door lock and hydraulic door closer. 5. The connection of our ... 6. The connection of our cold room is with cam lock construction and excentric fasterners for tight connection and sealing of ... embossed aluminum,painted galvanized steel,stainless steel,PVC stellPanel connectioncam lock type, use hexagonal key to assemble and disassembleType of doorhinge door ...