With the transformation of the new energy vehicle industry from policy driven to market driven, the new energy vehicle industry has entered a stage of rapid development. The assembly process is highly automated and cleaning requirements. The clean step feeder developed by Danikor can be equipped with a variety of cleaning schemes to ensure the full cleaning of screws in the feeding process. With multiple types of tightening modules, it can realize the cleaning of both feeding and tightening processes and greatly improve the assembly quality. The screw feeding and tightening system with stable performance is widely used in the industries of new energy vehicle electronics, general assembly, auto parts and power assembly.