... ), Proximity Switch IHS is backup for Torch Retaining Cap IHS for cutting dirty/rusty workpiece, needing the ... Freeze Auto Height Control on Corner SignalXPTHC-300 would freeze Auto Mode on receiving corner signal ... , and XPTHC-III;2008 made capacitive CHC-300 for laser cutting;2009 started to co-design THC ... generation THC, XPTHC-300, and CHC-200E.2012 designed DC version cap THC for Zinser, and new ...