Agreement and Plan of Arrangement Sample Contracts

EXHIBIT 10.31 AGREEMENT AND PLAN OF ARRANGEMENT

Agreement and Plan of Arrangement • March 22nd, 2000 • 360network Inc • Electrical work • New York

• Contract Type
  Agreement and Plan of Arrangement
• Filed
  March 22nd, 2000
• Company
  360network Inc
• Industry
  Electrical work
• Jurisdiction
  New York

AGREEMENT AND PLAN OF ARRANGEMENT dated as of April 26, 2010 between WuXi PharmaTech (Cayman) Inc. and Charles River Laboratories International, Inc.

Agreement and Plan of Arrangement • April 26th, 2010 • Charles River Laboratories International Inc • Services-commercial physical & biological research • Delaware

• Contract Type
  Agreement and Plan of Arrangement
• Filed
  April 26th, 2010
• Company
  Charles River Laboratories International Inc
• Industry
  Services-commercial physical & biological research
• Jurisdiction
  Delaware

AGREEMENT AND PLAN OF ARRANGEMENT (this “Agreement”) dated as of April 26, 2010 between WuXi PharmaTech (Cayman) Inc., an exempted company incorporated with limited liability under the laws of the Cayman Islands (the “Company”), and Charles River Laboratories International, Inc., a Delaware corporation (“Acquiror”).