UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 12B-25

                                                Commission File Number 000-51576
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                           NOTIFICATION OF LATE FILING

(Check One):  |_| Form 10-K    |X| Form 20-F      |_| Form 11-K    |_| Form 10-Q
              |_| Form N-SAR   |_| Form N-CSR

For Period Ended: December 31, 2005

|_| Transition Report on Form 10-K           |_| Transition Report on Form 10-Q
|_| Transition Report on Form 20-K           |_| Transition Report on Form N-SAR
|_| Transition Report on Form 11-K

For the Transition Period Ended:  ______________________________________________


  Read attached instruction sheet before preparing form. Please print or type.

    NOTHING IN THIS FORM SHALL BE CONSTRUED TO IMPLY THAT THE COMMISSION HAS
                   VERIFIED ANY INFORMATION CONTAINED HEREIN.


If the notification relates to a portion of the filing checked above, identify
the item(s) to which the notification relates:________________________________

                                     PART I
                             REGISTRANT INFORMATION

ORIGIN AGRITECH LIMITED
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Full Name of Registrant


CHARDAN CHINA ACQUISITION CORP.
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Former Name if Applicable


NO. 21 SHENG MING YUAN ROAD, CHANGPING DISTRICT
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Address of Principal Executive Office (Street and Number)


BEIJING, PEOPLE'S REPUBLIC OF CHINA 102206
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City, State and Zip Code





                                     PART II
                             RULE 12B-25(B) AND (C)

      If the subject  report could not be filed without  unreasonable  effort or
expense  and  the  registrant  seeks  relief  pursuant  to Rule  12b-25(b),  the
following should be completed. (Check box if appropriate.)

      (a)   The reasons described in reasonable detail in Part III of this form
            could not be eliminated without unreasonable effort or expense;

      (b)   The subject annual report, semi-annual report, transition report on
            Form 10-K, 20-F, Form 11-K, Form N-SAR or Form N-CSR, or portion
            thereof, will be filed on or before the 15th calendar day following
|X|         the prescribed due date; or the subject quarterly report on Form
            10-Q, or portion thereof, will be filed on or before the fifth
            calendar day following the prescribed due date; and

      (c)   The accountant's statement or other exhibit required by Rule
            12b-25(c) has been attached if applicable.


                                    PART III
                                    NARRATIVE

      State below in reasonable  detail the reasons why Forms 10-K,  20-F, 11-K,
10-Q, N-SAR,  N-CSR, or the transition  report or portion thereof,  could not be
filed within the prescribed time period.

      THE  REGISTRANT  EXPECTS TO FILE ITS ANNUAL  AUDIT REPORT ON FORM 20-F FOR
      THE FISCAL YEAR ENDED  DECEMBER 31, 2005 ON OR BEFORE JULY 15,  2006.  THE
      REGISTRANT HAS  EXPERIENCED  DELAYS IN COMPLETING  THE  PREPARATION OF ITS
      FINANCIAL STATEMENTS AND THE MANAGEMENT'S  DISCUSSION AND ANALYSIS IN FORM
      20-F. AS A RESULT,  THE  REGISTRANT IS UNABLE TO FILE ITS ANNUAL REPORT ON
      FORM  20-F  FOR THE  FISCAL  YEAR  ENDED  DECEMBER  31,  2005  WITHIN  THE
      PRESCRIBED PERIOD WITHOUT UNREASONABLE EFFORT AND EXPENSE.


                                     PART IV
                                OTHER INFORMATION

       (1) Name and telephone number of person to contact in regard to this
notification

JEFF YOUQIANG WANG (CHIEF FINANCIAL OFFICER)        +86-10         5890-7518
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            (Name)                                (Area code) (Telephone number)

      (2) Have all other periodic  reports required under Section 13 or 15(d) of
the Securities  Exchange Act of 1934 or Section 30 of the Investment Company Act
of 1940  during the  preceding  12 months or for such  shorter  period  that the
registrant  was  required to file such  report(s)  been filed?  If answer is no,
identify report(s).
                                                                  |X| Yes |_| No


      (3) Is it anticipated that any significant change in results of operations
from the corresponding  period for the last fiscal year will be reflected by the
earnings statements to be included in the subject report or portion thereof?

                                                                  |_| Yes |X| No

      If so, attach an explanation of the anticipated  change,  both narratively
and  quantitatively,  and, if  appropriate,  state the reasons why a  reasonable
estimate of the results cannot be made.


                             ORIGIN AGRITECH LIMITED
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                  (Name of Registrant as Specified in Charter)

Has  caused  this  notification  to be signed on its  behalf by the  undersigned
thereunto duly authorized.


Date: JUNE 28, 2006                     By   /s/ Jeff Youqiang Wang
      ---------------------                  -----------------------------------
                                             Jeff Youqiang Wang
                                             (Chief Financial Officer)


INSTRUCTION: The form may be signed by an executive officer of the registrant or
by any other duly  authorized  representative.  The name and title of the person
signing  the form  shall  be typed or  printed  beneath  the  signature.  If the
statement is signed on behalf of the registrant by an authorized  representative
(other than an executive officer), evidence of the representative's authority to
sign on behalf of the registrant shall be filed with the form.


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                                    ATTENTION
        INTENTIONAL MISSTATEMENTS OR OMISSIONS OF FACT CONSTITUTE FEDERAL
                    CRIMINAL VIOLATIONS (SEE 18 U.S.C. 1001).
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