... the surface of lock, watch part, hinge and hardware etc.IF series ion ... chromium nitride coating,etc. nitride, titanium carbide, zircomium carbide and nitride, etc. carbonization of the ... coating of tools and automotive parts subdural and various wares, fumiture accessories, watches, accessories and so on ... types of work pieces (tool and die, gauge and cutting tool, bearing and piston ring etc.).There ...