Cheap And Discounts Plasma THC Automatic Arc And Cap Voltage SH-HC31 Torch Height Controller For CNC Plasma Cutter Upgrade From SH-HC30 NEWCARVE Wholesale. Buy Directly From Merchant NEWCARVE Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.