... ) 3:High speed Galvo head Laser Marking Machine for PVC pipe are detailed as follow:Applicate:1; can ... clocks, jewelry, auto parts, plastic buttons, construction material, PVC pipe, medical equipment, etc. .3; application materials include: ... oxide (metal oxide may be), special surface treatment (phosphate, aluminum anodizing, plating surface), ABS material (electrical appliances, housing, commodities ...