Air Innovative Systems, Inc.

Air Institution, Inc.

Air Kontrol, Inc.

Air Pollution (Equipment) Limited

Air Pollution Research System

Air Pollution Systems, Inc.

Air Pollution Systems, Incorporated

Air Pollution Technology, Inc.

Air Products and Chemials, Inc.

Air Purification Products International, Inc.

Air Purification Products, International

Air Quality Laboratories

Air Resources, Inc.

Air Solution Company

Air Systems International, Inc.

Air-Kare, Inc.

Air-Maze Corporation

Air-O-Matics, Inc.

Airecon Manufacturing Corp.

Airgard, Inc.