Manufacturers

Japan
IHI INDUSTRIES
KOBE STEEL
KAWASAKI
MITSUBISHI

Netherlands
Thomassen

Russia
Aviadvigatal- Permmotors 

Sweden
Volvo Aerospace

United Kingdom
John Brown Corporation
Rolls Royce Corp.
European Gas Turbines (Ruston Turbines)

United States
Caterpillar Tractor Corp.
Daimler Chrysler
Delaval Turbines
Dresser Corp.
Dresser Rand Corp.
General Electric Corp.
Siemens Westinghouse Power Corporation
Solar Turbines Corp.
United Technologies Corp.
Hamilton Standard
Turbo-Power and Marine