Circuit Breaker Tester
- GDHL 100A, 200A, 400A Circuit Breaker Contact Resistance Tester, Loop Resistance Tester
- GDGK-307 High Voltage Switch Circuit Breaker Analyzer with Dual Ground
- GDHL-100A Portable High Voltage Circuit Breaker Contact Resistance Tester
- GDKZ-IV High Voltage Circuit Breaker Vacuum Degree Tester, High Voltage Switchgear Vacuity Tester