... : Die casting, Deburring, Drilling holes, Tapping, CNC Machining and Assembly.5. Surface treatment: Sandblasting, Tumbling, Powder coating, ... processing such as oil spraying, screen printing, assembly ect. -Traceability is maintained from all inspection gages ... : Die casting, Deburring, Drilling holes, Tapping, CNC Machining and Assembly.5. Surface treatment: Sandblasting, Tumbling, Powder coating, ...