Document:

Exhibit 4.1

FILED #C4139-96
MAY 07 2001
IN THE OFFICE OF
/S/ DEAN HELLER
DEAN HELLER SECRETARY OF STATE

                          CERTIFICATE OF DESIGNATION
                         CONVERTIBLE PREFERRED SHARES
                        OF HALIFAX INTERNATIONAL, INC.

     RESOLVED, that pursuant to the authority vested in the Board of
Directors by virtue of the Corporation's Articles of Incorporation,
Convertible Preferred Shares of the Corporation be, and it hereby is, created
out of the authorized but unissued shares of the capital shares of the
Corporation, such shares to be designated Convertible Preferred Shares (the
"Convertible Preferred Shares") to consist of Ten Million (10,000,000) shares,
of which the preferences and relative other rights, and the qualifications,
limitations or restrictions thereof, shall be (in addition to those set forth
in the Corporation's Articles of Incorporation) as follows:

A.  The holders of the preferred shares shall be entitled to receive, when and
as declared by the Board of Directors of the Corporation, cumulative dividends
at the rate of Eight Dollars ($8.00) per share per annum, and no more, payable
semiannually on the first days of January and July in each year.  Such
dividends shall cumulate on all such payment dates on which the particular
share shall be issued and outstanding and shall be cumulative to the full
extent of the semiannual payment notwithstanding that such share may have been
issued less than six (6) months prior to such payment date.  No dividends
shall be paid to or set apart for payments to common shareholders unless all
past accumulated dividends on the preferred shares shall have first been paid,
or declared and set apart for payment.

B.  Each preferred share shall be convertible at the holders option into one
share of common stock at $1.00 per share for three years commencing September
30, 2000.

C.  Upon any dissolution, liquidation, or winding-up of the Corporation, the
holders of preferred shares shall be entitled to receive, before any payment
shall be made to the holders of common shares, the sum of One Hundred Dollars
($100.00) per share plus, in case such dissolution, liquidation, or winding-up
be voluntary, a premium equal to Five Dollars ($5.00) per share, together
with, in all cases, all past accumulated and unpaid dividends.  The
consolidation or merger of the Corporation at any time, or from time to time,
with any other corporation or corporations, shall not be construed as a
dissolution, liquidation or winding-up of the Corporation within the meaning
hereof.

<PAGE>

     After payment of the full preferential amount as aforesaid, the holders
of preferred shares shall not be entitled to any further participation in any
distribution of the assets and funds of the Corporation shall be divided and
distributed among the holders of the common shares then outstanding according
to their respective interests.

D.  The preferred shares at any time outstanding may be redeemed by the
Corporation, in whole or in part, at any time or from time to time, at the
option of the Board of Directors upon not less than ten (10) days' prior
written notice to the holders of record of the preferred shares to be
redeemed, at One Hundred Five Dollars ($105.00) per share plus an amount equal
to the past accumulated and unpaid dividends as of the redemption date.  If
such notice is given by mail, it shall be deemed received by the shareholder
from whom redemption is to be made when deposited by the Corporation in the
mail, registered, postage prepaid, and addressed to the last known address of
such shareholder.  If less than all of the outstanding preferred shares are to
be redeemed, the redemption may be made either by lot or pro rata, or by such
other method as the Board of Directors in its discretion may determine,
including, without limitation of the foregoing, the right to designate which
shareholder shall be required to surrender any part or all of the preferred
shares owned by such shareholder.  If such notice of redemption shall have
been duly given and if, on or before the redemption shall have been set aside
so as to be available therefore, then notwithstanding that any certificate for
preferred shares so called for redemption shall not have been surrendered for
cancellation, all dividends on such preferred shares forthwith on such
redemption date cease and terminate, except only the right of holders thereof
to receive the amount payable upon redemption thereof, but without interest.

E.  Except as herein otherwise expressly provided, or as otherwise provided by
the laws of the State of Nevada, the holders of common shares shall
exclusively possess all of the voting power of the Corporation for the
election of directors and for all other purposes, and the holders of the
preferred shares shall have no voting power, and no holder of thereof shall be
entitled to receive notice of any meetings of shareholders.

     IN WITNESS WHEREOF, Halifax International, Inc. has caused this
Certificate of Designation of Convertible Preferred Shares of Halifax
International, Inc. to be signed and acknowledged in its name and its behalf
by its President and attested by its Secretary this 4TH day of May 2001.

<PAGE>

HALIFAX INTERNATIONAL, INC.

/S/ Victor Hinojosa                 /s/ Philip E. Lundquist
___________________________         ___________________________
VICTOR HINOJOSA, President          PHILIP E. LUNDQUIST, Secretary

STATE OF UTAH                 )
                              :
COUNTY OF SALT LAKE           )

     On this 4th day of May 2001, personally appeared before me Victor
Hinojosa and Philip E. Lundquist personally known to me or proved to me on the
basis of satisfactory evidence to be the person whose name is signed on the
preceding document, and acknowledged to me that they signed it voluntarily for
its stated purpose.

/s/ signature illegible
__________________________
NOTARY PUBLIC

Stamped: Notary Public, Rockdale County, Georgia
My Commission Expires July 1, 2005<PAGE>   1
                                                                 EXHIBIT 10.17

                                    AGREEMENT

This AGREEMENT (the " Agreement"), dated as of April 4, 2001 between
Industrialex Manufacturing Corp., a Colorado corporation ("Industrialex") and
Vincent DiNapoli and Susan E. DiNapoli, residing at 135 Pinewood Loop, Monument,
CO 80132, ("Holders"), being Holders of a Secured Promissory Note between the
parties dated July 5, 2000 in the amount of $610,000.

RECITAL

Industrialex and Holders desire to retire the Secured Promissory Note in the
amount of $610,000 between the parties to conclude the Stock Purchase Agreement
between the parties dated June 7, 2000.

NOW, THEREFORE, in consideration of the foregoing, the parties hereby agree as
follows:

The Secured Promissory Note between the parties, dated July 5, 2000, in the
amount of $610,000 will be retired as follows:

      (a)   The sum of $350,000 will be paid in cash or immediately available
            funds at the time of the execution of this agreement.

      (b)   The sum of $160,000 will be paid by delivery of an aggregate of
            213,333 shares of Industrialex common stock, subject to all
            necessary regulatory approval.

      (c)   The sum of $100,000 will be paid by delivery of a promissory note in
            substantially the form of Exhibit A hereto, in the aggregate
            principal amount of $100,000. Note shall bear interest at the rate
            of eight percent (8.0%) per annum and be due in eighteen (18)
            monthly payments of principal and interest beginning on May 15,
            2001.

      (d)   Holders will deliver to Industrialex, at the time of the execution
            of this agreement, all of the outstanding shares of Screen Tech
            Graphics, Inc. common stock and will release their security interest
            in such shares and all of the tangible and intangible property and
            assets of Screen Tech Graphics, Inc.

IN WITNESS WHEREOF, the parties have executed this Agreement and caused the same
to be duly delivered on their behalf on the day and year first written above.

<PAGE>   2

"INDUSTRIALEX"                                  "HOLDERS"

INDUSTRIALEX MANUFACTURING
 CORP.

/s/  Ahmad Akrami                               /s/ Vincent DiNapoli
--------------------------------                ------------------------------
Ahmad Akrami, Chairman and Chief                Vincent DiNapoli
   Executive Officer

                                                /s/  Susan E. DiNapoli
                                                ------------------------------
                                                Susan E. DiNapoli<PAGE>   1
                                                                 EXHIBIT 10.18

                                    AGREEMENT

This AGREEMENT (the " Agreement"), dated as of April 17, 2001 between
Industrialex Manufacturing Corp., a Colorado corporation ("Industrialex") and
Joseph P. Triolo, Sr.; Joseph P. Triolo, Jr.; Gary M. Triolo and John A. Triolo
(the "Holders"), being Holders of a Secured Promissory Notes between the parties
dated May 1, 2000 in the aggregate amount of $700,000.

RECITAL

Industrialex and Holders desire to retire the Secured Promissory Note in the
amount of $700,000 between the parties to conclude the Stock Purchase Agreement
between the parties dated May 1, 2000.

NOW, THEREFORE, in consideration of the foregoing, the parties hereby agree as
follows:

The Secured Promissory Notes between the parties, dated May 1, 2000, in the
aggregate amount of $700,000 will be retired as follows:

      (e)   The aggregate sum of $200,000 will be paid in cash or immediately
            available funds at the time of the execution of this agreement as
            specified in Exhibit A.

      (f)   The sum of $265,000 will be paid by delivery of an aggregate of
            353,333 shares of Industrialex common stock as specified in Exhibit
            B, subject to all necessary regulatory approval.

      (g)   The sum of $235,000 will be paid by delivery of promissory notes as
            specified in Exhibit C, in substantially the form of Exhibits D, E,
            F and G hereto, in the aggregate principal amount of $235,000. Such
            notes shall bear interest at the rate of eight percent (8.0%) per
            annum and be due in twenty-four (24) monthly payments of principal
            and interest beginning on May 17, 2001.

      (h)   Holders will deliver to Industrialex, at the time of the execution
            of this agreement, all of the outstanding shares of Decorative and
            Coating Systems, Inc. common stock and will release their security
            interest in such shares and all of the tangible and intangible
            property and assets of Decorative and Coating Systems, Inc.

<PAGE>   2

IN WITNESS WHEREOF, the parties have executed this Agreement and caused the same
to be duly delivered on their behalf on the day and year first written above.

"INDUSTRIALEX"                                                "HOLDERS"

INDUSTRIALEX MANUFACTURING
 CORP.

/s/ Ahmad Akrami                                /s/ Joseph P. Triolo, Sr.
---------------------------------               -------------------------------
Ahmad Akrami, Chairman and Chief                Joseph P. Triolo, Sr.
     Executive Officer

                                                /s/ Joseph P. Triolo, Jr.
                                                -------------------------------
                                                Joseph P. Triolo, Jr.

                                                /s/ Gary M. Triolo
                                                -------------------------------
                                                Gary M. Triolo

                                                /s/ John A. Triolo
                                                -------------------------------
                                                John A. Triolo

<PAGE>   3

                                                                     EXHIBIT A

                     Industrialex Manufacturing Corporation

Schedule of cash payable under Paragraph (a) of the AGREEMENT, dated as of April
17, 2001 between Industrialex Manufacturing Corp., a Colorado corporation and
Joseph P. Triolo, Sr.; Joseph P. Triolo, Jr.; Gary M. Triolo and John A. Triolo.

<TABLE>
<S>                                                           <C>
                Joseph P. Triolo, Sr.                         $142,778.00
                Joseph P. Triolo, Jr.                         $  17,881.00
                Gary M. Triolo                                $  21,460.00
                John A. Triolo                                $  17,881.00
                                                              ------------
                                                              $ 200,000.00
</TABLE>

<PAGE>   4

                                                                     EXHIBIT B

                     Industrialex Manufacturing Corporation

Schedule of stock payable under Paragraph (b) of the AGREEMENT, dated as of
April 17, 2001 between Industrialex Manufacturing Corp., a Colorado corporation
and Joseph P. Triolo, Sr.; Joseph P. Triolo, Jr.; Gary M. Triolo and John A.
Triolo.

<TABLE>
<S>                                                    <C>
                Joseph P. Triolo, Sr.                  252,238  shares
                Joseph P. Triolo, Jr.                   31,592  shares
                Gary M. Triolo                          37,911  shares
                John A. Triolo                          31,592  shares
                                                      --------
                                                       353,333  shares
                                                       =======
</TABLE>

<PAGE>   5

                                                                    EXHIBIT C

                     Industrialex Manufacturing Corporation

Schedule of notes payable under Paragraph (c) of the AGREEMENT, dated as of
April 17, 2001 between Industrialex Manufacturing Corp., a Colorado corporation
and Joseph P. Triolo, Sr.; Joseph P. Triolo, Jr.; Gary M. Triolo and John A.
Triolo.

<TABLE>
<S>                                                           <C>
                Joseph P. Triolo, Sr.                         $167,763.00
                Joseph P. Triolo, Jr.                         $  21,012.00
                Gary M. Triolo                                $  25,213.00
                John A. Triolo                                $  21,012.00
                                                              ------------
                                                              $ 235,000.00
</TABLE>

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