ATLAS COPCO
BAKER HUGHES
BAUER COMPRESSORS
BELAIRE
BOGE KOMPRESSOREN
BURCKHARDT COMPRESSION AG
CAMPBELL HAUSFELD
CHICAGO PNEUMATIC
COOK COMPRESSION
DOOSAN PORTABLE POWER
EBARA CORP.
ELGI EQUIPMENT
FRANK COMPRESSORS
Gardner Denver
GE OIL & GAS
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS
HOKUETSU INDUSTRIES CO.
HOWDEN GROUP
INGERSOLL RAND
KAESER KOMPRESSOREN
KAISHAN
KIRLOSKAR PNEUMATIC CO. LTD.
KOBELCO COMPRESSORS
MAN DIESEL & TURBO
MANATEC ELECTRONICS
MATTEI COMPRESSORS
MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORP.
PORTER-CABLE
QUINCY COMPRESSOR
SIEMENS
SULLAIR (A HITACHI GROUP CO.)
SULZER AG
VMAC GLOBAL TECHNOLOGY INC.
WUXI COMPRESSOR