GE Power Solutions Japan, AGC, Asahi Chemical, IHI, Idemitsu Kosan, Ube Industries, Ebara Environment Plant, Okinawa Electric Power, KHI, Kyushu Electric, Kubota Corp., Cottrell Engineering, Kobe Steel, Sanki Kogyo, JFE Engineering, JFE Steel, JX Nippon Oil & Energy, Shinwa Corp., Nippon Steel & Sumitomo Metal, Showa Shell Oil, Sumitomo H.I. Steel Plantech, Diamond Engineering, Taiheiyo Engineering, Takuma, Chubu Electric, Chugoku Electric, Chiyoda Corp., Tsukishima Machinery, Denka Engineering, Denka, J-Power, Tokyo Steel, Tokyo Electric, Toshiba, Tosoh Corp. Tohoku Electric, Toyo Engineering, Toray, Niigata Prime Mover, JGC, NGK Insulators, Mitsubishi-Hitachi Power Systems, Hitachi Shipbuilding & Engineering, Hitachi, Furnace Engineering, Hokuriku Electric, Hokkaido Electric, Panasonic Ecosystems, Mitsubishi Material, Mitsui E&S Shipbuilding, Mitsui E&S Engineering, Mitsui E&S Machinery, Yonden Engineering, Ryukyu Cement, Rozai Kogyo, etc.
Hyundai H.I.(Korea), GS E&C(Korea), STX H.I.(Korea), PT Rekayasa Industries (Indonesia) , Boustead International Heaters(Malaysia), CMI(Belgium), Hamon (Germany), Hanwha Engineering & Construction(Korea), CTCI(Taiwan), Toyo Korea(Korea), JGC Singapore(Singapore), etc.