Domestic companies
- SANSEI CO., LTD.
- KUBOTEK CO., LTD.
- Fujisawa Technos Co., Ltd.
- JAE Hakko Corporation
- KANADEN CORPORATION
- SEIKO ELECTRIC CO., LTD.
- SAKAE ELECTRONICS CORPORATION
- SUN-WA TECHNOS CORPORATION
- Seiwa Electronics Co., Ltd.
- Makoto Trading Co., Ltd.
- Gateway Computer Co., Ltd.
- Abex Corporation
- Iwasaki Communication Industry Co., Ltd.
- Optima Co., Ltd.
- Koguchina Trading Co., Ltd.
- Joy System Co., Ltd.
- STAR DENKI Corporation
- MIYOTA Co., Ltd
- Atom Seimitsu Co. Ltd
- Gunei Co., Ltd.
- Beetron Co., Ltd.
- Ogihara Manufacturing Co., Ltd.
- OOHIRO. CO., LTD.
- TOBA, INC.
- HODENSHA Co., Ltd.
- Shinei Electric Co., Ltd.
- Kyoto Denkiki Co., Ltd.
- KOYO-ELEC CO., LTD.
- Todoroki Sangyo co., Ltd
- Showa Denki Co., Ltd.
- SINTO S-PRECISION, LTD.
- Soltec Japan, Ltd.
- Nihon Kizai Co., Ltd.
- NIHON DENKEI CO., LTD.
- Hoshi Seisakusho Co., Ltd.
- YOKO ELECTRONICS CO., LTD.
- Synerdyne
- TIMEX Co., Ltd.
- Hakusan, inc
- Positronic Japan Co., Ltd.
- AVC Corporation of Japan
- NIHON MARUKO
- KAIYO DENSHI KOGYO CO., LTD.
- Nanotechs Inc.
- Chubu-Nihon Maruko
- UNI-ELECTRONICS, INC.
- IBEX Inc.
- Richico Japan Inc
- NIHON DENKEI CO., LTD.
- Yamato Denki Co., Ltd.
- LEMO Japan, Ltd.
- ODU Japan
Companies outside Japan
- JST Deutschland GmbH., Germany
- XB Componentsnv., the Netherlands
- PEI-GENESIS International, USA
- GENERAL MATRIX, USA
- MARCH ELECTRONICS, USA
- ASTREX, INC, USA
- ARROW ELECTRONICS, Inc
- J&K Connectors
- Avnet Electronics Marketing
- Sungjin C&T Co., Ltd.
- POWELL ELECTRONICS,INC
- ElectroEnterprises, Inc.
- CDM Electronics, Inc.
- Pan Pacific Electronics, Inc,
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