- A
- / A and D Company, Limited / ADVANTEC / AMETEK Corporate / Anritsu Meter Co., Ltd. / Arika-Giken / AS ONE Corporation / Asahi Glassplant Inc.
- B
- / B.E.MARUBISHI CO.,LTD. / Beckman Coulter / Best Instruments Co.,Ltd. / BL TEC K.K.
- C
- / Central Kagaku Corp. / CHINO CORPORATION / Cosmo Instruments Co., Ltd.
- D
- / DAIWA INDUSTRIES LTD. / DALTON CORPORATION / DKK-TOA CORPORATION
- E
- / EKO Instruments B.V. / Engis Japan Corporation / ESPEC CORP. / ESPEC MIC Corp.
- F
- / FC-R and D / FISCHER INSTRUMENTS K.K.
- G
- / GASTEC CORPORATION / GL Sciences Inc. / Graphtec Corporation
- H
- / HORIBA, Ltd.
- I
- / IMT / IMV CORPORATION / Insight k.k. / Irie-Shokai / ISHIKAWA Kojo Co. Ltd. / ISUZUSEISAKUSHO
- J
- / JEOL Ltd. / JFE Techno-Research Corporation
- K
- / Kasahara Chemical Instruments Corp. / KENIS LIMITED / Kett Electric Laboratory / KJTD / KOBUNSHI KEIKI CO.,LTD. / Kodaira Seisakusho / KOFLOC Corp. / KOKUGO Co.,Ltd, / Kokusan / KOMYO RIKAGAKU KOGYO K.K. / Konica Minolta, Inc. / KYORITSU CHEMICAL-CHECK Lab., Corp. / Kyoto Electronics Manufacturing Co., Ltd. / Kyowa Interface Science Co., Ltd
- L
- / Leica Microsystems
- M
- / Mitsubishi Chemical Analytech Co.,Ltd. / Mitutoyo Corporation. / Miyamoto Riken Ind. Co., Ltd.
- N
- / NEW COSMOS ELECTRIC CO., LTD. / NIHON KEIRYOKI KOGYO / Nikkato / Nikon Instech Co., Ltd. / Nobby Tech. Ltd.
- O
- / Olympus Corporation / Omi Odor Air Service Co.,Ltd. / ORGANO CORPORATION / Otsuka Electronics Co., Ltd. / OVAL Corporation
- P
- / PHC Holdings Corporation / PRIMIX Corporation / Progress Co.,Ltd
- Q
- / Qualtec Co., Ltd.
- R
- / Rigaku Corporation / RIGO / RIKEN KEIKI Co., Ltd. / RION CO.,LTD.
- S
- / S.B. RESEARCH CO.,LTD. / SAITOH KOUGAKU Co.,Ltd / Sakae / SANKEI Co., Ltd. / SANKO ELECTRONIC LABORATORY CO., LTD. / SANPLATEC CO.,LTD. / Sanshin Metal Working Co., Ltd. / SANSYO Co., LTD / Sartorius Japan / Sato Keiryoki Mfg. Co., Ltd / SATO VAC INC. / Seikow Chemical Engineering and Machinery, Ltd / Seishin Enterprise Co., Ltd. / SELMIC Corporation / SHIBAURA ELETEC CORPORATION / SHIMADZU CORPORATION / SHIMADZU RIKA CORPORATION / Shinagawa Co., Ltd. / Shinken.Co.Ltd. / SHINKO DENSHI CO.LTD / Shinto Scientific Co., Ltd. / SIBATA SCIENTIFIC TECHNOLOGY LTD. / SOLVAY Japan / Standard test piece / Suga Test Instruments Co.,Ltd. / SUGIYAMA-GEN CO., LTD.
- T
- / TA Instruments. / TACMINA CORPORATION / TAIATSU TECHNO / TAITEC CORPORATION / TAIYU / TECLOCK Co.,Ltd. / TESTER SANGYO CO,. LTD. / Testo SE and Co. / Thermo Fisher Scientific Inc. / THOMAS KAGAKU Co.,Ltd. / Tokyo Garasu Kikai Co., Ltd. / TOKYO KEIKI INC. / TOKYO KOKI TESTING MACHINE CO.LTD. / TOKYO RIKAKIKAI CO, LTD / TOKYO SEIMITSU CO., LTD. / Trusco Nakayama Corporation
- U
- / Ueshima Seisakusho Co., Ltd. / Ultrasonic Engineering Co.,Ltd.
- V
- / VESSEL CO.,INC.
- Y
- / YAMAMOTO-MS Co., Ltd. / Yamato Scientific co., ltd. / YASUDA SEIKI Company / YONEKURA MFG Co.,Ltd.
