... and maintenance-free.With the features of High speed, high precision and high efficiency.Precision, fine and permanent marks. Easy to use ... phone covers, surgical instruments, hardware metals, watch covers, rubber, ceramic, etc. Laser Marking Machine Parameter: Model No.GDBGX ... spraying materials, PVC PE PP PT ABS plastics, rubber, resin, ceramic and so on2. Laser Marking Machine’s Applicable Sector ...