The industrial sliding door panel is made of 0.5mm thick color coated steel plate, and the edges of the front and rear steel plates are formed without direct contact, which effectively avoids the cold bridge effect, prevents the door panel from being frozen, and the thermal insulation and energy-saving effect is more prominent. The internal filling is made of high-density polyurethane foam material with excellent thermal insulation performance (foam density 43kg/m³, which is the highest density standard in the domestic industrial door market, and the surface is color-coated.)