Regular members
As of April 1, 2009
| Company name | Postal code | Address (in Japan) | Phone (+81) |
| CITIZEN FINETECH MIYOTA CO., LTD. | 389-0295 | 4107-5 Miyotta, Miyota-machi, Kitasaku-gun, Nagano-pref | 267-32-3232 |
| DAISHINKU CORP. | 675-0194 | 1389 Shinzaike, Hiraoka-cho, Kakogawa, Hyogo | 79-426-3211 |
| EPSON TOYOCOM CORPORATION | 191-8501 | 421-8 Hino, Hino-shi, Tokyo | 42-581-1707 |
| FINE CRYSTAL Co., Ltd. | 051-8505 | 9-1 Chatsu-machi, Muroran-shi, Hokkaido | 143-22-7401 |
| Furukawa NDK Co.,Ltd. | 989-6233 | 16-1 Aza-Shintakayachi, Sakuranome, Furukawa, Ohsaki-shi, Miyagi | 229-28-1611 |
| Global Co.,Ltd | 400-1514 | 1160 Asari, Chuo-shi, Yamanashi | 55-269-3311 |
| Kitami Tokyo Denpa co.,Ltd. | 099-1587 | 18-5 Houji, Kitami-shi, Hokkaido | 157-36-2351 |
| KOYO PRECISION CO.,LTD. | 403-0002 | 4715 Koasumi, Fujiyoshida-shi, Yamanashi | 555-23-8000 |
| KYOCERA CORPORATION | 612-8501 | 6 Takeda Tobadono-cho, Fushimi-ku, Kyoto-shi, Kyoto | 75-604-3500 |
| KYOCERA KINSEKI Corporation | 201-8648 | 1-8-1 Izumi-Honcho, Komae-shi, Tokyo, | 3-5497-3110 |
| KYOCERA KINSEKI HERTZ Corporation | 192-0152 | 2161-3 Miyama-cho, Hachioji-shi, Tokyo | 42-650-7211 |
| KYOCERA KINSEKI Yamagata Corporation | 999-3701 | 5850 Higashine-koh ohaza, Higashine-shi, Yamagata | 237-43-5611 |
| KYUSHU DENTSU CO.,LTD. | 856-0006 | 340 Fukushige-machi, Ohmura-shi, Nagasaki | 957-55-1313 |
| Mita Denpa Co.,Ltd. | 178-0061 | 7-17-20 Ohizumi Gakuen-cho, Nerima-ku, Tokyo | 3-3925-1653 |
| NIHON DEMPA KOGYO CO., LTD | 151-8569 | Sasazuka NA Bldg., 1-50-1 Sasazuka, Shibuya-ku, Tokyo | 3-5453-6711 |
| Niigata NDK Co., Ltd | 959-0432 | 251-1, Kawasaki, Nishikan-ku, Niigata-city, Niigata | 256-88-3355 |
| NIKKO DENSHI CO., LTD. | 183-0055 | Fuchu minami Bld. 4F, 1-10-3 Fuchu-cho, Fuchu City, Tokyo | 42-367-8001 |
| RIVER ELETEC CORPORATION | 407-8502 | 2-1-11 Fujimigaoka, Nirasaki-shi, Yamanashi | 551-22-1211 |
| Seiko Insturuments Inc. | 261-8507 | 1-8 Nakase, Mihama-ku, Chiba-shi, Chiba | 43-211-1111 |
| SORACHI QUARTZ CO.,LTD. | 073-0407 | 189-22 aza Monju, Utasinai-shi, Hokkaido | 125-42-551 |
| Sunlead CO.,Ltd. | 950-2112 | 854 Uchino-cho, Nishi-ku, Nigata-shi, Nigata | 25-263-3300 |
| TOKYO DENPA CO.,LTD. | 143-0015 | 1-12-18 Omori-Nishi Ota-ku, Tokyo | 3-5493-4711 |
| TOKYO QUARTZ CO., LTD. | 193-0931 | 4-32-4 Dai-machi, Hachioji-shi, Tokyo | 426-24-9191 |
| Ukoudenshi CO.,LTD. | 350-1312 | 764-5 Horigane, Sayama-shi, Saitama | 4-2958-4354 |
| YAMANASHI DENPA CO., LTD. | 400-0861 | 5-15-8 Joto, Kofu-shi, Yamanashi | 55-235-1371 |
Supporting members
As of April 28, 2011
| Company name | Postal code | Address (in Japan) | Phone (+81) |
| ASAHI KASEI EMD CORPRATION | 101-8101 | 1-105 Kanda Jinbocho, Chiyoda-ku, Tokyo | 3-3296-3955 |
| ASAKA RIKEN INDUSTRIAL CO,.LTD. | 963-0725 | 47, Aza Maseguchi, Kanaya, Tamura-machi, Koriyama-shi, Fukushima | 24‐944‐4744 |
| Canon Tokki Corporation | 954-0076 | 10-1 Shinko-cho, Mitsuke-shi, Niigata | 258-61-5050 |
| Fuji Denka Inc. | 212-0004 | 4-20 Komukai Nichi-machi, Saiwai-ku, Kawasaki-shi, Kanagawa | 44-522-6591 |
| Fujikura Corporation | 206-0803 | View Towers koyodai 3-902, 4-4-1 Kohyodai, Inagi-shi, Tokyo | 42-378-8432 |
| FUKUDA CO.,LTD. | 176-0021 | 3-16-5 Nukui, Nerima-ku, Tokyo | 3-5377-1111 |
| GENERGY Co.,Ltd. | 399-4601 | 5214-11 Nakaminowa, Minowa-machi, Kamiinagun, Nagano | 265-79-0113 |
| GOTOSEIKO LTD. | 382-0071 | 2171-5 Ogawara, Suzaka-city, Nagano | 26-245-7217 |
| HAMAI CO.,LTD. | 141-0031 | 5-5-15 Nishi Gotanda, Shinaga-ku, Tokyo | 3-3491-0131 |
| Hitachi High-Technologies Corporation | 105-8717 | 1-24-14 Nishi Shinbashi, Minato-ku, Tokyo | 3-3504-7111 |
| Humo Laboratory,Ltd. | 167-0042 | 5-19-11 Nishiogi Kita, Suginami-ku, Tokyo | 3-3395-5311 |
| HYGENTE CO., LTD | 150-0002 | Shibuya Cross Tower 17F, 2-15-1 Shibuya, Shibuya-ku, Tokyo | 3-5774-0025 |
| IDEC CONTROLS LTD | 532-0005 | 1-10-40, Mikunihonmachi, Yodogawa-ku, Osaka | 6-6398-3800 |
| ISHIKAWA METAL CO.,LTD. | 151-0053 | Toko Yoyogi Pair-city Bld., 3-36-8 Yoyogi, Shibuya-ku, Tokyo | 3-5365-3170 |
| KOJIMA CHEMICALS CO.,LTD. | 350-1335 | 337-26 Kashiwabara, Sayama-city, Saitama | 4-2953-9231 |
| KOTO ELECTRIC CO.,LTD. | 110-0012 | 2-17-3 Ryusen, Taito-ku, Tokyo | 3-5808-1755 |
| MATSUDA SANGYO CO.,LTD. | 163-0058 | Shinjuku Nomura Bld. 6F, 1-26-2 Nishi Shinjuku, Shinjuku-ku, Tokyo | 3-3345-0811 |
| Maxis01 Corporation | 335-0015 | 2-5-30, kawagishi, Toda-city, Saitama | 48-430-5901 |
| NEC SCHOTT Components Corporation | 528-0034 | 3-1 Minakuchi-cho Nichiden, Kouka-shi, Shiga | 748-63-6610 |
| NEOMAX MATERIALS Co.,LTD. | 564-0043 | 2-19-1 Minami Suita, Suita-shi, Osaka | 6-6381-9151 |
| NGK SPARK PLUG CO.,LTD. | 467-8525 | 14-18 Takatsuji-cho, Mizuho-ku, Nagoya, Aichi | 52-872-5915 |
| Nippon Avionics CO.,Ltd. | 141-0031 | Gotanda Kowa Bld., 8-1-5 Nishi Gotanda, Shinagawa-ku, Tokyo | 3-5436-0600 |
| Panasonic Industrial Devices Discrete Semiconductor Co,.Ltd. | 617-8520 | Ichibanchi Yakemachi, Koutari , Nagaokakyo-shi, Kyoto | 75-956-8900 |
| Renesas Northern Japan Semiconductor.Inc | 041-1196 | 145-1 Nakajima, Nanae-cho, Kameda-gun, Hokkaido | 138-65-4111 |
| S.E.R. CORPORATION | 140-0001 | 1-14-8 Kitashinagawa, Shinagawa-ku, Tokyo | 3-5796-0330 |
| SANSEI DENSHI CO., LTD. | 201-0004 | 1-11-8 Iwado Kita, Komae-shi, Tokyo | 3-3489-4131 |
| Saunders Japan Ltd. | 105-0011 | 32Shiba park Bld. 3F, 3-4-30 Shiba koen, Minato-ku, Tokyo | 3-5777-9177 |
| SEIKO NPC CORPORATION | 104-0032 | 1-9-9 Hatchobori, Chuo-ku, Tokyo | 3-5541-6500 |
| Shin-Etsu Polymer Co.,Ltd. | 101-0041 | 1-9 Kanda-sudacho, Chiyoda-ku, Tokyo | 3-5289-3712 |
| SHINCRON CO.,LTD | 220-8680 | 4-3-5 Minato Mirai, Nishi-ku, Yokohama-city, Kanagawa-Pref. | 45-650-2400 |
| SHOWA SHINKU CO.,LTD. | 252-0244 | 3062-10 Tana, chuo-ku, Sagamihara-shi, Kanagawa | 42-764-0321 |
| SIWARD TECHNOLOGY CO.,LTD. | 992-0025 | 3-2-74 Tohrimachi Yonezawa-city Yamagata-Pref. | 238-23-3305 |
| SPEEDFAM CO.,LTD. | 252-1123 | 2647 Hayakawa, Ayase-shi, Kanagawa | 467-76-3131 |
| SUMITOMO METAL MINING CO., LTD. | 105-8716 | 5-11-3 Shinbashi, Minato-ku, Tokyo | 3-3436-7701 |
| Sumitomo Metal(SMI)Electronics Devices Inc. | 759-2212 | 2701-1 Higashibun, Ohmine, Mine-shi, Yamaguchi | 837-54-0100 |
| SUNCO SPRING CO.,Ltd. | 223-8540 | 5-10-41 Tsunashima-Higashi, Kohoku-ku Yokohama, Kanagawa | 45-543-7701 |
| TAKATORI CORPORATION | 634-8580 | 313-1 Shindo-cho, Kashihara-city, Nara | 744-24-8580 |
| Tanaka Kikinzoku Kougyou K.K. | 100-6422 | 2-7-3 Tokyo Bld. 22F, Marunouchi, Chiyoda-ku, Tokyo | 3-5222-1300 |
| TEITSU ENGINEERING CO., LTD. | 211-8530 | 45-1 Kariyado, Nakahara-ku Kawasaki, Kanagawa | 44-411-4454 |
| TOKI COMMERCIAL CO., LTD. | 108-0014 | 5-20-14 Shiba, Minato-ku, Tokyo | 3-3452-2145 |
| Wanotec CO.,Ltd. | 289-0517 | 7285-1 Harumi.Sosa-shi, Chiba-ken | 479-73-5261 |
| YASUNAGA CORPORATION | 518-0834 | 3860 Midorigaoka Naka-machi, Iga-shi, Mie | 595-24-2111 |
| YOKOWO.CO.,LTD. | 114-8515 | 7-5-11 Takinogawa, Minato-ku, Tokyo | 3-3916-3111 |
| YOSHIKAWA KOUGYO CO.,Ltd. | 805-8501 | 2-1-2 Ogura, Yawata Higasi-ku, Kitakyusu-shi, Fukuoka | 93-671-8626 |