End cover: metal stamped cover: stamped with high-quality cold plate, inspected, cleaned and sealed after being inspected by zinc plating or chromium plating or nickel plating.
Metalworking cover: after processing and inspection according to the drawing, surface treatment, inspection and sealing are carried out.
Engineering plastic cover: after injection molding, it consumes thorns, and the parts to be processed should be processed according to the drawing, cleaned, inspected and sealed.
Skeleton: adopt high-quality perforated plate or diamond mesh, round welding, round correction, surface treatment, cleaning and sealing.
