EXHIBIT
31
  SECTION
302 CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL
OFFICER
     I,
Xiaojin Wang, certify that:
   1. I have
reviewed this quarterly report on Form 10-Q of Wincroft, Inc.;
  2. Based
on my knowledge, this quarterly report does not contain any untrue statement of
a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements were
made, not misleading with respect to the period covered by this quarterly
report;
  3. Based
on my knowledge, the financial statements, and other financial information
included in this quarterly report, fairly present in all material respects the
financial condition, results of operations and cash flows of the small business
issuer as of, and for, the periods presented in this quarterly
report;
  4.  The
small business issuer’s other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal controls over financial
reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the
small business issuer and have:
 
 a)    
Designed such disclosure controls and procedures, or caused such disclosure
controls and procedures to be designed under our supervision,  to
ensure that material informa­tion relating to the small business issuer,
including its consolidated subsidiaries, is made known to us by others within
those entities, particularly during the period in which this  report
is being prepared;
 
 b)   
Designed such internal controls over financial reporting, or caused such
internal controls over financial reporting to be designed under our supervision,
to provide reasonable assurance regarding the reliability of financial reporting
and the preparation of financial statements for external purposes in accordance
with generally accepted accounting principles;
  c)      Evaluated
the effectiveness of the small business issuer’s disclosure controls and
procedures and presented in this report our conclusions about the effectiveness
of the disclosure controls and procedures, as of the end of the period covered
by this report based on such evaluation; and
 
 d)     
Disclosed in this report any change in the small business issuer’s internal
control over financial reporting that occurred during the small business
issuer’s most recent fiscal quarter (the small business issuer’s fourth fiscal
quarter in the case of an annual report) that has materially affected, or is
reasonably likely to materially affect, the small business issuer’s internal
control over financial reporting; and
  5. The
small business issuer's other certifying officers and I have disclosed, based on
our most recent evaluation of internal control over financial reporting, to the
small business issuer's auditors and the audit committee of small business
issuer's board of directors (or persons performing the equivalent
function):
  a)        All significant deficiencies
and material weaknesses in the design or operation of internal control over
financial reporting are reasonably likely to adversely affect the small business
issuer's ability to record, process, summarize and report financial information;
and
 
 b)        Any fraud, whether or not
material, that involves management or other employees who have a significant
role in the small business issuer's internal control over financial
reporting.
 
 Date:
      August 18, 2008
              /s/ Xiaojin
      Wang
 Xiaojin
Wang, Chief Executive Officer
 and Chief
Financial Officer