[Joint Filing Agreement This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument. [Remainder of this page has been left intentionally blank.] GREENWOODS CHINA ALPHA MASTER FUND Jinzhi Jiang Director GREENWOODS ASSET MANAGEMENT LIMITED Jinzhi Jiang Director GREENWOODS ASSET MANAGEMENT HOLDINGS LIMITED Jinzhi Jiang Director UNIQUE ELEMENT CORP] [13D CUSIP No. 45173K101 Page 2 of 14 Pages 1 Names of reporting persons Greenwoods China Alpha Master Fund 2 Check the appropriate box if a member of a group ¨ x (a) 3 SEC use only 4 Source of funds]