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- 1987, the company was formally established.
- 1989, single phase eem calibrator launched.
- 1990, three phase eem calibrator launched.
- 1992, achieved simultaneous operations of error meter and update display that greatly improved the efficiency of meter calibration.
- 1995, the first company manufacturing eem calibrator of 0.01 grade.
- 1998, the first company successfully applying the pwm power amplifier in electric energy calibration equipment and realizing super power and high efficiency for calibration equipment.
- 1999, exporting the eem calibrator to schlumberger co (france), started the international business.
- 2000, multi-function standard meter of sampling technology was sold overseas.
- 2001, started using the signal source with dsp technology.
- 2002, 0.02 grade standard meter was developed and put into market. the first company in china authorized to manufacture high class metering products
- 2003, ranked in the guangzhou 120 most grown enterprise.
- 2004, ranked in the guangzhou’s 100 strongest private enterprise.
- 2006, the products has been successfully exported to 27 countries and areas.
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