Exhibit 10.9

                         AGREEMENT ON TRANSFER OF PATENT
                              (SUMMARY TRANSLATION)

TRANSFEROR:
Kunjie Zhuang
Address: Room A4-402, Longteng Garden, Huli District, Xiamen, Fujian Province

TRANSFEREE:
Shenzhen GrenTech Co., Ltd.
Legal Representative: Yingjie Gao
Address: Room 1001, 10th Floor, East Tower, Block 4, Saige Science & Technology
         Park, Huaqiang Road North, Futian District, Shenzhen

Whereas the Transferor has lawful ownership to Multilocular Filter with Low
Loss, High Selectivity and High Power, with Patent Number: ZL200320110871.6 (the
"PATENT") and agrees to transfer the Patent to the Transferee free of charge.

Whereas the Transferee is willing to accept the transfer of the aforesaid Patent
by the Transferor and to implement the underlying technology under the Patent.

Both parties hereby enter into this agreement:

Section I      The Transferor hereby transfers the Patent to the Transferee free
               of charge.

Section II     The Transferor shall submit all necessary documentation required
               by the Patent Bureau of China for registering transfer of the
               Patent.

Section III    Within ten days after the signing of this Agreement, the
               Transferor shall deliver the complete set of documents relating
               to the Patent to the Transferee, including the application,
               notice of acceptance of application, notice of power of attorney,
               patent certificate and announcement. The Transferor shall also
               assist the Transferee in implementing the technology under the
               Patent.

Section IV     Upon the completion of the transfer hereunder, where a third
               party submits a claim to the Patent Bureau of China to challenge
               the validity of the Patent, both the Transferor and the
               Transferee shall jointly respond to the claim.

               Where a third party brings a proceeding against the Transferee
               for infringement of any patent rights due to the Patent
               subsequent to the completion of the transfer hereunder, both the
               Transferor and the Transferee shall jointly respond to the
               proceeding and bear the consequences of the dispute.

Section V      Upon the completion of the transfer of the Patent, the Transferee
               shall own the Patent. The Transferor shall not attempt to
               transfer or license the Patent to any third party.

Section VI     This Agreement shall come into effect upon due execution by both
               parties, and the transfer of Patent shall come into effect upon
               its registration with and announcement by the Patent Bureau of
               China.

Section VII    Any dispute arising from this Agreement shall be resolved through
               friendly negotiation between the parties. Where a dispute cannot
               be resolved through negotiation, either party is entitled to
               bring a lawsuit at any people's court with jurisdiction.

Section VIII   This Agreement is done in three counterparts, each having equal
               effect.

TRANSFEROR:                             TRANSFEREE


/s/ Kunjie Zhuang                       /Seal/ Shenzhen GrenTech Co., Ltd.
-------------------------------------

                                        /s/ Gao Yingjie
                                        ----------------------------------------

Date: April 11, 2005