Casting, Transformer, AC Contactor manufacturer / supplier in China, offering 1. Reliable Tdgc-2/0.5 Voltage Regulator: 2kVA, 1-Phase, 220V to 0-250V, 1. Tdgc-1/0.5 Single-Phase Voltage Regulator: 1kVA, 220V Input, 0-250V Output, 1. High-Performance Tdgc-0.5/0.5 Voltage Regulator with 0.5kVA Capacity and so on.