- 1979: Digital power panel meter, meter relay (M/SM/SD series)
- 1981: Power transducer (LP/FP/RP/SP series)
- 1984: Industry transmitter (PS Series)
- 1989: Plug-in type power transducer (PP1 series) All products designed in ASIC modularized.
- 1992: R2 RTU, RTU I/O simulator
- 1993: Three Phase Precision Power Calibrator 9300H Three Phase Multi-Functions Precision Power Meter Series 3000
- 1994-1998:
- HC Power SCADA, AGC, AFC, EGC
- Frequency Analysis
- Dispatcher training simulator system
- MCC (metering communication control)
- R2+ RTU
- Power meter series of HC 6000,HC 6010, HC 6030
- Power clamp meter series of HC 3511, HC 3513
- Digital power transducer series of HC 6600, HC 6650
- 1999-2005:
- Power meter series of HC 6710, HC 6720, HC 6730
- Energy Power Meter
- HC PEMS Power & Energy Management System
- DTU-2000 Series (Distribution Terminal Unit) DTU-2000/10/20/30/40
- DTU-2100 Series
- HC SA(Substation Automation) System
- HC DA(Distribution Automation) System
- FTU, IED Devices
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