... GS ISO9001 Certificate. 3.Warranty 1 year. Inverter Air Plasma Dc Arc Cutting machine CT-312/CT-416 The Features: 1. New type ... and high efficiency,economy and practical2. One machine has three purposes ... ,automatic voltage compesation capablility,less splash.5. Sutable for cutting carbon steel,stainless steel,alloy stell ,copper,aluminium and so ...