[Execution Version PURCHASE A GREEMENT THIS PURCHASE A GREEMENT Agreement (this “ BETWEEN : (1) KKR CHINA HEALTHCARE INVESTMENT LIMITED , an exempted company with limited liability incorporated in the Cayman Islands with its registered office at c/o M aples Corporate Services Seller Limited, PO Box 309, Ugland House, Grand Cayman KY1-1104, Cayman Islands (the “ (2) GOLDEN MEDITECH HOLDINGS] [Execution Version VOTING DEED THIS VOTING DEED , executed as a deed Deed (this “ AMONG : (1) Mr. KAM YUEN ( 甘源 ) Mr. Kam , a Hong Kong citizen with Hong Kong passport number KJ0207229 and correspondence address at c/o Golden Meditech Holdings Limited, 48/F, Bank of China Tower, 1 Garden Road, Central, Hong Kong (“ (2) BIO] []