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| 1990. 05. Established Hisung Trading Company |
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| 1997. 05. Going Public company with new name of Dooyang Systesms Inc. |
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| 2000. 05. Established R&D Lab. |
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| 2002. 07 Started to export Endoscope 19Ħħ monitor to Stryker Endoscope in USA |
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| 2004. 12. ISO 9001, 14001 APPROVED |
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| 2005. 04. Compliant with FCC, CE, UL for TX-2M.TX-3M.TX-5M Monochrome monitor |
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| 2005. 10. Registered as the Venture company by Government |
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| 2007. 03. Released New Endoscope monitor model TX-19SV2 |
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| 2007. 09. Approved FDA 510k for Diagnosis monochrome monitor line up |
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| 2007. 09. Auto Calibration Sensor development and |
| .................filed an application of international patent (US11/977649)
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| 2008. 06. Changed the company name to TRUEPIX Inc. |
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