One-component polyurethane adhesive is a moisture-curing adhesive, which is cured by the small amount of moisture absorbed in the air and on the surface of the adherend. It can also be artificially sprayed on the surface of the adhesive to promote curing. After curing, the adhesive layer is insoluble and not melted, and the product performance is superior. Convenience. It is widely used in the cross bonding of metal sheets, wood and various fireproof and thermal insulation materials in the door industry.