[Execution Version CHINA BIOLOGIC PRODUCTS, INC. 3,500,000 SHARES OF COMMON STOCK (PAR VALUE $0.0001 PER SHARE) UNDERWRITING AGREEMENT March 1, 2016 March 1, 2016 Morgan Stanley & Co. International plc 25 Cabot Square, Canary Wharf London, E14 4QA United Kingdom Schedule I As the Sole Underwriter named in Ladies and Gentlemen: Selling Stockholders Company Schedule II Schedule I Underwriter Shares] [Execution Version CHINA BIOLOGIC PRODUCTS, INC. 3,870,000 SHARES OF COMMON STOCK (PAR VALUE $0.0001 PER SHARE) AMENDED AND RESTATED UNDERWRITING AGREEMENT March 2, 2016 March 2, 2016 Morgan Stanley & Co. International plc 25 Cabot Square, Canary Wharf London, E14 4QA United Kingdom Schedule I As the Sole Underwriter named in Ladies and Gentlemen: Selling Stockholders Company Schedule II Schedule] [LOCK-UP LETTER March 1, 2016 Morgan Stanley & Co. International plc 25 Cabot Squire, Canary Wharf London, E14 4QA United Kingdom As the sole underwriter named in the Underwriting Agreement (as defined below) Ladies and Gentlemen: Underwriting Agreement Company Selling Stockholders Public Offering Underwriter Shares Common Stock Restricted Period Prospectus Exchange Act Covered Securities Options provided provided i ii provided] [LOCK-UP LETTER March 1, 2016 Morgan Stanley & Co. International plc 25 Cabot Squire, Canary Wharf London, E14 4QA United Kingdom As the sole underwriter named in the Underwriting Agreement (as defined below) Ladies and Gentlemen: Underwriting Agreement Company Selling Stockholders Public Offering Underwriter Shares Common Stock Restricted Period Prospectus Exchange Act Covered Securities Options provided provided i ii provided] [LOCK-UP LETTER March 1, 2016 Morgan Stanley & Co. International plc 25 Cabot Squire, Canary Wharf London, E14 4QA United Kingdom As the sole underwriter named in the Underwriting Agreement (as defined below) Ladies and Gentlemen: Underwriting Agreement Company Selling Stockholders Public Offering Underwriter Shares Common Stock Restricted Period Prospectus Exchange Act Covered Securities Options provided provided i ii provided] [CUSIP No. 16938C106 1. Names of reporting persons. WP X Biologics LLC 2. Check the appropriate box if a member of a group (see instructions). ¨ x (a) 3. SEC use only 4. Source of funds (see instructions) N/A 5. ¨ 6. Citizenship or place of organization Delaware]