(1) Pay-off work is stopped according to the centerline and elevation points of civil engineering; The design of facing is based on the axis of the building. The aluminum-plastic plate skeleton consists of horizontal and vertical pieces. Play the position line of the vertical bar first, and then confirm the anchorage point of the vertical bar.

(2) The device fixes the connector on the basis of pay-off, fixes the connector by electric welding, and applies antirust paint to the weld twice. The connector is welded and fixed with the embedded parts on the main structure. When there are no pre-embedded iron parts in the main structure, contraction bolts can be used to fix the connecting iron parts.

(3) The frame of the device shall be installed by welding. The device shall check the elevation and the position of the center line at any time, and at the same time, carry out anti-rust paint treatment on the welding seam of the span joint, and cover the fixed joint. The records include the length, thickness, location, buried elevation, quantity and buried depth of the joint weld.

(4) Install the aluminum-plastic plate on the inner frame of the profile, tap and mill the screw holes first, and fix them with rivets.