Hydroscience, Inc.
Hydrosource, Inc.
Hydrotech Chemical Corporation
Hydrotech Nils-Ake Persson AB
Hydrotech Nils-Ake Persson Aktiebolag
Hydrotech Veolia Water Systems Aktiebolag
Hydrotechnic Corporation
Hydrotechnology, Inc.
Hydrotechnology, Inc. a California corp.
Hydrotreat, Inc.
Hydrovak Systems (Holland) B.V.
Hydroworld International (Canada), Ltd.
Hydroxyl Systems Inc.
Hying Christian
Hynninen Pertti K.
Hyoky Goran
Hyperno Proprietary Limited
Hypponen Alpo
Hyrsky Timo
Hytec Flow Systems