| Principal Customers | ||
| JAPAN | Murata Manufacturing Co.,Ltd. | TEAC・・ |
| Accuphase Laboratory,Inc. | Nagano NEC・・ | Victor Company of Japan,Limited. |
| Audio-Technica Corporation | NANAO Corporation | YAHATA Electric Works,Ltd. |
| CANON Inc. | NEC Corporation | YAMAHA Corporation |
| Cosel Co.,Ltd. | NEC Magnus Communications,Ltd. | Yokogawa Electric Corporation |
| Daikin Trading ・・ | Ohkura Electric Co.,Ltd. | Yutaka Electric MFG Co.,Ltd. |
| D&M Holdings,Inc. | Olympus Optical Co.,Ltd. | |
| DENSEI-LAMDA K.K. | Onkyo Corporation | |
| FDK Corporation | Panasonic Corporation | |
| FANUC LTD. | Pioneer Corporation | Overseas |
| FUJITSU・・ | Ricoh Co.,Ltd. | United States of America |
| FUJITSU Access Limited | Ricoh Keiki Co.,Ltd. | South America |
| FUJITSU GENERAL LIMITED | Rubycon Corporation | United Kingdom of Great Britain |
| Fuji Denki・・ | SANKEN Electric Co.,Ltd. | French Republic |
| Fuji Xerox Co.,Ltd. | SANYO Electric Co.,Ltd. | Republic of Italy |
| FUNAI Electric Co.,Ltd. | Sharp Corporation | Kingdom of Spain |
| Hitachi,Ltd. | Shindengen Electric Manufacturing Co.,Ltd. | Republic of China (Taiwan) |
| Ikegami Tsushinki Co.,Ltd. | SONY Corporation | Republic of Korea |
| Kenwood Corporation | SONY EMCS Corporation | People's Republic of China |
| Kowa Company,Ltd. | Solectron Corporation | Republic of Singapore |
| Kyocera Corporation | Soshin Electric Co.,Ltd. | Kingdom of Thailand |
| MASPRO DENKO CORP. | Tyco Electronics AMP K.K. | Malaysia |
| Minebea Co.,Ltd | Tabuchi Electric Co.,Ltd. | |
| Mitsubishi Electric Corporation | Takaoka Electric MFG Co.,Ltd. | |
| Mitsumi Electric Co.,Ltd. | TAMURA Corporation | |
