In terms of technology, the door and window hardware industry is the first to apply independently formulated oxidation processes, and has always maintained a leading position in oxidation processes. At the same time, we have R&D and supply chain support for the surface technology processes of all hardware and resin materials, including oxidation, spraying, electrophoresis, electroplating, fluorocarbon, PVD vacuum coating, optical coating, nanomaterials, graphene materials, etc.