... GS ISO9001 Certificate. 3.Warranty 1 year. AIR PLASMA CUTTING MACHINE(LGK-40/63/100/120)FEATURES:1.Compress air ... ARC starting with cantact,usable curve cutting fleetly.2.High cutting speed,Narrow cutting gap,smoth cutting surface,small distortion,safety and durable ... .3.Widly use for cutting canbon steel, ...