1. inverter welding machinery. 2. inverter DC ARC welding equipment. 3. inverter TIG industrial welders. Description: 1. inverter welding machinery.2. inverter DC ARC welding equipment.3. inverter TIG industrial welders. .Features: inverter industrial welding machines, inculding ARC-400 ARC-500,ARC-400IGBT,ARC-500IGBT, TIG-400,TIG-500, they used in all kinds of materials.