- AIRTAC
- COMPACT TOOL CO., LTD.
- KOSMEK LTD.
- KUKEN Co., Ltd.
- Muraki Ltd.
- NACHI-FUJIKOSHI CORP.
- NAKANISHI INC.
- Nihon Pisco Co., Ltd.
- Nihon Seimitsu Kikai Kosaku Co., Ltd.（Leutor）
- Nippon Pneumatic Mfg. Co., Ltd.
- Nitta Corporation
- NITTO KOHKI CO., LTD.
- RIKEN KIKI CO., LTD.
- SMC Corporation
- TAIYO, LTD.
- TOKYO KEIKI INC.
- Toyooki Kogyo Co., Ltd.
- UHT Corporation
- Uryu Seisaku, Ltd.
- VESSEL CO., LTD.
- YOKOTA INDUSTRIAL COMPANY LIMITED
- Yutani Corporation
