Perftech PTI Canada
PerfTech (PTI) Canada Corp.
Pergola International Holdings (u.s.) Corporation
Pergola International Holdings Canada Limited
Pergola International Holdings Corporation
Perhar Consultants Incorporated
Peri Dar Inc.
Periden Technologies Inc.
Peridot Ink Ltd.
Perigee Engineering Limited
Perigene Inc.
Perimatek Inc.
Periodic Quest Inc.
Peritone Research Ltd.
Periwig Canada Enterprises Inc.
Perkins & Associates Technology Consulting Inc.
Perlaw Holdings 2007 Limited
Perlaw Limited
Perlex International Chemicals Ltd.
Perley-Robertson, Hill & McDougall LLP/s.r.l.