... Machine 3.CE Approved CNC Pneumatic Marking Machine with CEtechnical Indicator 1.marking deepness:0.01-2mm(confirmed ... be design to special requirements)CertificationCEUse Environment1. power supply : AC220V±10%,50Hz2. compressed air: 0 ... , petroleum-machine, engineering- machine, steel, tool producing, war industry, fire fighting, mould and plastic machine fields CNC Pneumatic Marking Machine with CE