The civil aircraft flight deck door system is installed in the aircraft cabin to block the cockpit area and cabin area. In addition to providing normal access to the cockpit. it must have bullet proof and intrusion prevention functions to prevent non-crew members from seizing control of the aircraft and provide safety protection for crew members. Proceeding from the interpretation of ... https://safeersappliancers.shop/product-category/bosch-serie-4-gsn29vw3vg-no-frost-161x60cm-200l-freestanding-upright-freezers/