<DOCUMENT>
<TYPE>EX-32.1
<SEQUENCE>4
<FILENAME>crec10qsbex321033107.txt
<TEXT>
                                                                    Exhibit 32.1


                  CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

                         PURSUANT TO 18 U.S.C. ss. 1350

                 (SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002)

I, Guangyu Wu, Chief  Executive  Officer  (principal  executive  officer) of the
Registrant,  China Recycling Energy Corporation ("China Digital Wireless,  Inc."
prior to March 8, 2007),  certify  pursuant to 18 U.S.C.  ss.  1350,  as adopted
pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that, based upon a review
of the  Quarterly  Report on Form 10-QSB for the period  ended March 31, 2007 of
the Registrant (the "Report"):

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of
the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material
respects, the financial condition and resuFlts of operations of the Registrant.

A signed  original of this  written  statement  required by Section 906 has been
provided to the  Registrant and will be retained by the Registrant and furnished
to the Securities and Exchange Commission or its staff upon request.

                                                         SIGNATURE

Date: May 15, 2007                                       /s/Guangyu Wu
                                                         -------------
                                                         Guangyu Wu
                                                         Chief Executive Officer


</TEXT>
</DOCUMENT>
