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Factory Price 20kVA Single Phase Automatic Voltage Regulator 140V-260V Wide Input 220V Output, ±3% Accuracy & Over/Under Protection for Weak Grid Areas, Find Details and Price about 20kVA Single Phase Automatic Voltage Regulator Factory Price AC Voltage Stabilizer from Factory Price 20kVA Single Phase Automatic Voltage Regulator 140V-260V Wide Input 220V Output, ±3% Accuracy & Over/Under Protection for Weak Grid Areas - Hebei Hanguang Electrical Equipment Technology Co., Ltd