Aecom
Andritz Ag
Babcock & Wilcox Enterprises Inc.
Chiyoda Corporation
Clyde Bergemann Eec
Doosan Lentjes Gmbh
Ducon Technologies Inc.
Flsmidth
General Electric
Hamon
Kawasaki Heavy Industries Ltd.
Marsulex Environmental Technologies Corp.
Mitsubishi Heavy Industries
Ltd.
Rafako S.A.
S.A Hamon
Thermax Ltd.
Valmet