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[EXECUTION VERSION U.S.$800,000,000 FACILITY AGREEMENT dated November 20, 2015 for WUXI MERGER LIMITED arranged by PING AN BANK CO., LTD. ( DEVELOPMENT BANK CO., LTD. ( as Mandated Lead Arrangers with SHANGHAI PUDONG DEVELOPMENT BANK CO., LTD. ( as Facility Agent and PING AN BANK CO., LTD. ( as Security Agent CONTENTS CLAUSE PAGE SECTION 1 INTERPRETATION 1 1. Definitions] [EXECUTION VERSION U.S.$300,000,000 FACILITY AGREEMENT November 20, dated for GROUP & CLOUD LIMITED arranged by PING AN BANK CO., LTD. ( DEVELOPMENT BANK CO., LTD. ( as Mandated Lead Arrangers with SHANGHAI PUDONG DEVELOPMENT BANK CO., LTD. ( as Facility Agent and PING AN BANK CO., LTD. ( as Security Agent CONTENTS CLAUSE PAGE SECTION 1 INTERPRETATION 1 1. Definitions] [SECOND AMENDMENT TO THE AGREEMENT AND PLAN OF MERGER Amendment Parent Merger Sub Company This SECOND AMENDMENT TO THE AGREEMENT AND PLAN OF MERGER, dated as of November 20, 2015 (this “ Agreement WHEREAS, Parent, Merger Sub and the Company desire to enter into this Amendment, which shall amend the Agreement in accordance with the terms and conditions set forth] []

[PROXY STATEMENT OF THE COMPANY October 20, 2015 Shareholders of WuXi PharmaTech (Cayman) Inc. Re: Notice of Extraordinary General Meeting of Shareholders Dear Shareholder: You are cordially invited to attend an extraordinary general meeting of shareholders of WuXi PharmaTech (Cayman) Inc., an exempted company with limited liability incorporated under the laws of the Cayman Islands (the “Company”), to be held] [EXECUTION VERSION SECOND AMENDED AND RESTATED CONSORTIUM AGREEMENT THIS SECOND AMENDED AND RESTATED CONSORTIUM AGREEMENT Agreement Chairman ABG Boyu Initial Sponsors G&C Temasek Hillhouse PRC Ping An G&C IV Co-Founder Equity LP Yunfeng Sequoia Legend Capital SPDBI Principal Consortium Member Principal Consortium Members Party Sponsor Parties Sponsors WHEREAS Original Consortium Agreement Transaction Company NYSE Exchange Act WHEREAS A&R Consortium Agreement] [EXECUTION VERSION CONFIDENTIAL AMENDED AND RESTATED INTERIM INVESTORS AGREEMENT Agreement Chairman Management Roll-over Entity ABG Boyu Temasek Hillhouse Ping An G&C IV Co-Founder Equity LP Yunfeng Sequoia Legend Capital SPDBI Equity Sponsor Equity Sponsors Investor Investors Holdco Parent Merger Sub Parties Party This Amended and Restated Interim Investors Agreement (this “ RECITALS Original Interim Investors Agreement WHEREAS, on August 14,] []