| HRYDJ (W) Series of High-voltage Tester of AC & DC   (Non-partial Discharge) for Light Oil-immersed Transformer |  | HRYDJ (W) Series of High-voltage Tester of AC & DC   (Non-partial Discharge) for Light Oil-immersed Transformer |  | HRYDJ (W) Series of High-voltage Tester of AC & DC   (Non-partial Discharge) for Light Oil-immersed Transformer |  | HRYDJ (W) Series of High-voltage Tester of AC & DC   (Non-partial Discharge) for Light Oil-immersed Transformer |  | HRYDJ (W) Series of High-voltage Tester of AC & DC   (Non-partial Discharge) for Light Oil-immersed Transformer |  | 
                    
                      HRG Series of Single-phase, Three-phase Isolated   Transformer and Rectifying Transformer | 
                
                  | HRGTB Series of Special Dry-type Tester of High-voltage Transformer |  | HRYDQ (W) Series of High-voltage Tester of Industrial Frequency Non-partial   Discharge for Ultra-light-type Gas-filled-type Transformer |  | HRYDQ (W) Series of High-voltage Tester of Industrial Frequency Non-partial   Discharge for Ultra-light-type Gas-filled-type Transformer |  | HRYDQ (W) Series of High-voltage Tester of Industrial Frequency Non-partial   Discharge for Ultra-light-type Gas-filled-type Transformer |  | HRYDQ (W) Series of High-voltage Tester of Industrial Frequency Non-partial   Discharge for Ultra-light-type Gas-filled-type Transformer |  | HRTNZDٍS٩Series of Electrical Plunger Voltage Regulator | 
                
                  | HRBSQ (SLQ/DDG) Series of Portable and Adjustable   Current AmplifierDC Large current generator(DC Adjust the large current   generator) HRBSQ(JZ)
 |  | HRYDXB Series of Resonance High-voltage Tester of Industrial Frequency (tandem,   parallel) for Transformer |  | HRYDXB Series of Resonance High-voltage Tester of Industrial Frequency (tandem,   parallel) for Transformer |  | HRYDXB Series of Resonance High-voltage Tester of Industrial Frequency (tandem,   parallel) for Transformer |  | HRHJ/HRHL All Series of Standard Accurate Voltage (Current) Transforme |  | HRHJ/HRHL All Series of Standard Accurate Voltage (Current) Transforme |