CNTF [China Techfaith Wireless Communication Technology] SC 13G/A: Joint Filing Agreement Defu Dong Defu Dong Oasis
[Joint Filing Agreement Defu Dong Defu Dong Oasis Land Limited Defu Dong Director Dongs Family Trust For and on behalf of HSBC International Trustee Limited, as trustee for Dongs Family Trust Andrew T. Chan, Danny W. K. Tsui Director, Associate Director] [CUSIP No. G84383101 1 NAMES OF REPORTING PERSONS 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP þ (a) o (b) 3 SEC USE ONLY 4]