The pneumatic carving machine---a kinds of CNC "super- silent marking machine" .It is an industrial marking equipment which can carving logo (characters ,VIN codes ,serial NO ,date ,graph ,etc)) on metal Workpiece Permanently, the carving logo will be more slick ,more exquisite. It has to be great revolution for the marking effect. Main Characters 1)Craving contents: all kinds of logo (characters ,serial NO, VIN codes, date ,graph, etc) on any metal or non-metal material (hardness under HRC48) 2)It is applied for plane marking 3)Craving contents could be saved automatically and not be destroyed due to the electric-break 4)The carving pin is made of titanium-alloy which could help to improve the logo effect. 5)The "silent" craving machine could control the sound below 70db which satisfy the environment standard completely . 6)NO metal particle spark out while craving 7)Support WINDOWS98/ME/XP 8)Support multi-kinds fond: MG fond, SHX fond in AutoCAD, CHR in Borland, TTF in Windows 9)Support DXF format graph from CAD, Corledraw Main tech-specification: Marking speed 1-180character/m Hitting frequency 300HZ Marking depth 0-0.3mm(according to the workpiece material ) Marking width 0.1-0.5mm Marking accuracy 0.02mm Marking scope 110*90mm (supply scope is allowed) Workpiece hardness allowed HRC48 Inputting air pressure 0.2-0.3MPA Craving sound 70db Power consumption 400W Application It is adequate for craving characters, serials number, VIN codes, pictorial trade mark etc. on automobile or bodywork of motorcycle, car frame, automotive chassis, connecting rod, engine, mechanical part, machine tool, metal pipe, gear, pump body, valve, etc products.