Applied ImmuneSciences
Applied Membrand Systems Pty Ltd.
Applied Membrane Technology, Inc.
Applied Process Technolgy, Inc.
Applied Separations, Inc.
Applikations-und Technikzentrum für Energieverfahrens-Umwelt-, u
Appollo Environmental Systems Corp.
Apro Istvan
APT Inc.
APT Water, Inc.
Aptel Philippe
Aqua - Aerobic Systems, Inc.
Aqua Care Systems, Inc.
Aqua Clarus Holdings Pty Ltd
Aqua Dynamics Group Corp.
Aqua Partners Ltd.
Aqua Strip Corporation
Aqua Systems Division of Chem-Free, Inc.
Aqua Trend Systems Inc.
Aqua&Co S.R.L.