... certificate CNC Glass Working Center/ LDKW2212 LIDU Glass Machine Co.,LtdTel: 0086 571 86923922Fax: 0086 571 ... the main axis of the engraving machine. There is automatic control on lubrication, vacuum, hydraulic pressure, and water supply, also, it has the function of ... protection and alarm. It is widely used in grinding, cutting, engraving, drilling and polishing glass and mirror. The ...