• ●ANEST IWATA Co.
• ●ATLAS COPUCO K.K.
• ●HITACHI Industrial Equipment Systems Co., Ltd.
• ●HOKUETSU Industries Co., Ltd.
• ●HORI Engineering Co., Ltd.
• ●KAJI Technology Co.
• ●KOBELCO Compressors Co.
• ●MITSUI SEIKI KOGYO Co., Ltd.
• ●SANWA Co.,Ltd.
• ●TANABE Pneumatic Machinery Co., Ltd.
• ●TOYO KOATSU Co., Ltd

• ●MARUTANI Chemical Plant & Engineering Co.
• ●MUNTERS K.K.
• ●NIHON SEIKI Co., Ltd.
• ●ORION Machinery Co., Ltd
• ●SEIBU GIKEN Co., Ltd.

• ●FUKUHARA Co., Ltd.
• ●HITACHI Industrial Equipment Systems Co., Ltd.
• ●KOJIMA Instruments Inc.
• ●MARUTANI Chemical Plant & Engineering Co.
• ●TAIYO NIPPON SANSO Co.

〈Heat Exchanger〉

• ●ALFA LAVAL K.K.
• ●FUJI Industry Co., Ltd.
• ●HASHITECH. Co., Ltd.
• ●INOUE Heater Co., Ltd.
• ●KATSUKAWA Heat Industry Co., Ltd.
• ●KUROSE Chemical Equipment Co., Ltd.
• ●SAKAIGAWA Industry Co., Ltd.

〈Cooling Tower〉

• ●EBARA Refrigeration Equipment & Systems Co., Ltd.
• ●MITSUBISHI Plastics Infratec Co., Ltd．
• ●NIHON Spindle Mfg. Co., Ltd.

〈Boiler〉

• ●KAWASAKI Thermal Engineering Co., Ltd.
• ●NIPPON THERMOENER Co., Ltd.
• ●OSAKA Boiler MFG. Co., Ltd.
• ●TAKUMA Co., Ltd.

• ●ANLET Co., Ltd.
• ●ASAHI KIKO Co., Ltd.
• ●ITO Engineering Co., Ltd.
• ●IZUMI Fan Co.
• ●KOGI Co.
• ●MITSUYA Fan Mfg. Co., Ltd.
• ●MUTO DENKI Co.
• ●NISSIN GIKEN Co., Ltd.
• ●OSAKA Vacuum, Ltd.
• ●SHOWA DENKI Co., Ltd.
• ●TAIKO KIKAI Industries Co., Ltd.
• ●UNOZAWA-GUMI Iron Works, Ltd.
• ●YOTSUBA Air Machine Mfg. Co., Ltd.

• ●BF KOGYO KAISHA, Ltd.
• ●HIRATA Valve Industry Co., Ltd.
• ●HISAKA Works, Ltd.
• ●MIYAWAKI Inc.
• ●MORITA Iron Works Co., Ltd
• ●NAKAKITA SEISAKUSHO Co., Ltd.
• ●NAKAMURA Valve Mfg. Co., Ltd.
• ●NBS Co.
• ●NIPPON Ball Valve Co., Ltd.
• ●RICO Sicherheitstechnik AG
• ●SANKYO SEISAKUSHO Co., Ltd.
• ●SASAKURA Engineering Co., Ltd.
• ●TOYO Valve Co., Ltd.
• ●UTSUE Valve Co., Ltd.
• ●V TEX Co.

• ●CSM Co., Ltd.
• ●NEURON JAPAN Co., Ltd.
• ●TOAFLEX Co., Ltd.
• ●TOFLE Co., Inc.
• ●YODOGAWA RASENKAN Mfg. Co., Ltd.

• ●EIM Electric Co., Ltd.
• ●ELEPON E.C.A.P. Co.
• ●FUKKO KINZOKU Industry Co., Ltd.
• ●HANATSUKA Mfg. Co., Ltd.
• ●HONDA KIKO Co., Ltd.
• ●IWAKI Co., Ltd.
• ●KANSUI Pump Co., Ltd.
• ●KYOWA KAKO Co., Ltd.
• ●MALHATY Pump Mfg. Co., Ltd.
• ●NIKKISO Co., Ltd.
• ●NIPPON HOWERD Co., Ltd.
• ●NISHIGAKI Pump Mfg. Co., Ltd.
• ●OSAKA Vacuum, Ltd.
• ●SAKURA SEISAKUSYO, Ltd.
• ●SAKURAGAWA Pump Mfg. Co., Ltd.
• ●SEEPEX JAPAN Co., Ltd.
• ●SHIN NIPPON Machinery Co., Ltd.
• ●SUMOTOMO SEIBIKI SEISAKUSHO Co., Ltd.
• ●TACMINA Co.
• ●TAIKO KIKAI Industries Co., Ltd.
• ●TEIKOKU Electric Mfg. Co., Ltd.
• ●TSURUMI Mfg. Co., Ltd.
• ●YAMADA Co.
• ●YOKOTA Mfg. Co., Ltd.

〈Screen〉

• ●KATO Iron Co., Ltd.
• ●TOYO SCREEN KOGYO Co., Ltd.

〈Strainer･Filter〉

• ●CENTRAL Filter Mfg. Co., Ltd.
• ●DAIDO Machines Co., Ltd.
• ●HUMAN Techno Co., Ltd.
• ●MIZUNO Strainer Industries Co., Ltd.
• ●WASINO KIKI Co., Ltd.

〈Stirrer〉

• ●HANWAKAKOKI Co., Ltd.
• ●SATAKE Chemical Equipment Mfg. Ltd.
• ●TAKEUCHI Mfg. Co., Ltd.

〈Water Treatment Device〉

• ●KOTOBUKI KAKOKI Ltd.
• ●KOTOBUKI KANKYOH KIZAI Co., Ltd
• ●MIURA Chemical Equipment Co., Ltd.
• ●SASAKURA Engineering Co., Ltd.
• ●TOYO Valve Co., Ltd.

〈Dehydrator〉

• ●FUKOKU KOGYO Co., Ltd.
• ●MAKINO Co.
• ●SHINMEIWA Industries, Ltd.
• ●TOMOE Engineering Co., Ltd.

〈Scrubber, Deodorization Device〉

• ●ACO Co., Ltd.
• ●KANKEN Techno Co., Ltd.
• ●KARUMOA Co., Ltd.
• ●MIURA Chemical Equipment Co., Ltd.
• ●SUNRAY REINETSU Co., Ltd.

〈Cleaning Equipment〉

• ●KAMTEC. Co., Ltd.
• ●NIPPON-KRANZLE Co., Ltd.
• ●SEIWA PRO Co., Ltd.
• ●SUMOTOMO SEIBIKI SEISAKUSHO Co., Ltd.

• ●KYOTO Electronics Mfg. Co., Ltd.
• ●MU Instruments Trading Corp.
• ●NOHKEN Inc.
• ●SHIMADZU System Solutions Co., Ltd.

〈Chimney Repair & Inspection〉

• ●MEISEI Industrial Co., Ltd.
• ●NAS TOA Co., Ltd.
• ●TSUKASATEC Co.
• ●TAISHO TEKKIN Concrete Co., Ltd.

〈Construction･Maintenance〉

• ●GODOSANGYO Co.
• ●KIUCHI Instrument Maintenance Co.
• ●SHINKO Co., Ltd.
• ●SUMISETSU Engineering Co., Ltd.
• ●TAIHEI DENGYO KAISHA, Ltd.