... flatness not exceeding 3mmApplicable Scope: Motor part, Mechanical part, Machine tool, Hardware product, Valve, Pump valve, Electro-mechanical equipment, ... marking and Database marking (4) Optional Marking Mode: Line Marking or Dot Marking (5) Optional Connection Mode: ... etc.(2) Mechanical Industry: to marking on Mechanical Part, Machine tool, Hardware Product, Steel Tube, Sleeve, Collar, Roller, Pump ...