1. The total thickness of Fuquan garage door and sliding door panel is 40mm ± 1mm, and both sides of the panel are 0.5mm thick Baosteel color coated steel plates. The coating treatment is from top to bottom, including polyester coating, primer, passivation layer, zinc coating, orange embossing, and front and back surface strip ribs to strengthen the strength of the panel. Hard filling between two-layer steel plates