Exhibit 32.1



                  CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER
                       PURSUANT TO 18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection  with the  accompanying  Quarterly  Report on Form 10- Q of Golden
Dragon Holding Co. for the  quarterly ended  March 31, 2012, I, David J. Cutler,
Principal  Executive and Accounting Officer of  Concord Ventures,  Inc.,  hereby
certifies  pursuant to 18 U.S.C.  Section 1350,  as adopted  pursuant to Section
906 of the Sarbanes-Oxley Act of 2002, to my knowledge, that:

     a)   such Quarterly Report on Form 10-Q of Golden Dragon Holding Co. for
          the quarter ended  March 31, 2012, fully complies with the require-
          ments  of section 13(a)  or 15(d) of the Securities Exchange Act of
          1934; and

     b)   the  information  contained in such  Quarterly  Report on Form 10-Q of
          Golden Dragon Holding Co. for the quarter ended March 31, 2012, fairly
          presents, in all  material  respects,  the  financial  condition  and
          results of operations of Golden Dragon Holding Co.


Date: May 4, 2012

                                    /s/ David J. Cutler
                                    -----------------------------------------
                                    David J. Cutler, Chief Executive Officer
                                    and Chief Financial Officer
                                    (Principal Executive and Accounting Officer)

This  certification  accompanies  the  Report  pursuant  to  Section  906 of the
Sarbanes-Oxley  Act of 2002 and shall not,  except to the extent required by the
Sarbanes-Oxley  Act of 2002,  be deemed  filed by the  Company  for  purposes of
Section 18 of the Securities Exchange Act of 1934, as amended.