| 1991 | Developed SMD TCXO “5111A” |  SMD TCXO 5111A  Suzhou NDK  ANC / NQM  SMD crystal clock oscillator 2700 series  Miniature OCXO 9121F |
| 1992 | Developed SMD MCF “NM7050SA” | |
| 1993 | Achieved complete elimination of ozone-depleting CFCs | |
| Developed SMD crystal unit “CP32C (now NX8045CA)” | ||
| Developed SC-OCXO (High precision SC-cut crystal Inside) | ||
| Developed SMD crystal clock oscillator 2500 series | ||
| 1994 | Established Suzhou NDK Co., Ltd., in Suzhou, China | |
| Established NDK Italy SRL | ||
| Obtained ISO 9001 certification at NDK. | ||
| 1995 | Established NDK France SARL | |
| Established Raffert Enterprises
Limited, in Hong Kong (Changed the corporate Name to Hi-Tech Crystal Limited in 1996) |
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| Established NDK Electronics (HK) Limited, in Hong Kong | ||
| 1996 | Developed low phase noise OCXO | |
| 1997 | ANC relocated (Integrated the two factories into one place in Malaysia) | |
| Developed SMD crystal clock oscillator 2700 series | ||
| Developed SMD crystal unit “NX5032CA” | ||
| 1998 | Obtained QS-9000 certification at NDK. | |
| Listed on the First Section of the Tokyo Stock Exchange | ||
| Opened Hi-Tech Crystal Limited, Taipei Branch (now NDK Electronics (HK) Limited Taipei Branch) | ||
| Developed High Frequency Fundamental miniature SMD VCXO “7311C” | ||
| Developed programmable SMD crystal clock oscillator | ||
| Developed miniature OCXO “9121F” | ||
| 1999 | Developed a tuning fork quart
crystal unit for angular-rate sensors used in car-navigation
systems. |
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| Obtained ISO 14001 certification at the Sayama Plant | ||
| Developed miniature SMD crystal unit “NX3225GA” | ||
| Developed SMD MCF “NM3030SA” | ||
| 2000 | Opened Product Development Center at NDK America, Inc. | |
| Developed SMD TCXO “NT5032SA” |
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