Laser welding in hardware and bathroom products has a high aspect ratio, weld width, heat affected zone, small deformation, and fast welding speed; the weld is smooth and beautiful, no treatment or simple processing procedures are required after welding, and the weld strength is high ; It can be precisely controlled, and it is easy to realize automation; it can realize the welding of some dissimilar materials. Laser marking on hardware sanitary products has good permanent, strong activity, safety and environmental protection, simple operation, and wide range of applicable materials. Laser cutting on hardware and sanitary products can cut any shape of sheet metal, with fast processing speed, high efficiency, low cost, high cutting accuracy, smooth section, no stress deformation, no need for secondary processing, and improved yield and reduced Cost.