Exhibit 10.31


                  CONSULTANT'S INCENTIVE STOCK OPTION AGREEMENT

THIS AGREEMENT made as of February 25, 2000

BETWEEN:

VIBRO-TECH INDUSTRIES, INC., a corporation subsisting under the laws of the
state of Delaware, having a place of business at Suite 2000 Cathedral Place, 925
West Georgia Street, Vancouver, B.C. V6C 2C2

                                 ("Vibro-Tech")

AND:

MR. DARRYL QUAN, Businessman, having a residence at 1090 Moreno Avenue, Palo
Alto, Ca 94303

     ("Quan")


WHEREAS:

A. Vibro-Tech and its affiliates are engaged in the business of the design,
manufacture, marketing and sales of seismic rubber vibration bearings for use in
the construction industry; B. Quan has agreed to be a financial consultant for
Vibro-Tech in charge on a non-exclusive basis of advising Vibro-Tech of the
financial matters relating to the government qualification, marketing and sales
of seismic rubber vibration bearings on the terms and conditions of an Agreement
dated February 25, 2000;


WITNESSES THAT the parties mutually covenant and agree as follows:


ARTICLE 1 DEFINITIONS AND INTERPRETATION

1.01 In this Agreement, including the recitals and schedules to this Agreement,
unless the context otherwise requires:

Exchange means the OTC Bulletin Board.

Exercise Price means US$0.30 per Optioned Share.

Expiry Date means 5:00 p.m., Vancouver time, on December 31, 2003.

Optioned Shares means 25,000 Shares.

Registrar means the Registrar of Securities under the Securities Act.

Rule 504 means Rule 504 of Regulation D under the Securities Act, as amended
from time to time.

Rule 701 means Rule 701 as promulgated under the Securities Act as amended from
time to time.

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Securities Act means the Securities Act of 1933, as amended from time to time.

Share or Shares means a common share or common shares of the Company as
constituted on July 1, 1999.

1.02 The captions, section numbers and article numbers appearing in this
Agreement are inserted for convenience of reference only and will in no way
define, limit, constrict or describe the scope or intent of this Agreement nor
in any way affect this Agreement.

1.03 This Agreement and all matters arising under this Agreement will be
governed by, construed and enforced in accordance with the laws of Delaware and
any proceeding commenced or maintained in connection with this Agreement will be
so commenced and maintained in the forum of appropriate jurisdiction in the
County of Vancouver, British Columbia to which jurisdiction the parties
irrevocably attorn.

1.04 In this Agreement, wherever the context requires, words importing the
singular number will include the plural and vice versa, words importing the
masculine gender will include the feminine and neuter genders and words
importing persons will include firms and corporations and vice versa.

1.05 Unless otherwise stated, a reference in this Agreement to a numbered or
lettered article, section, paragraph or subparagraph refers to the article,
section, paragraph or subparagraph bearing that number or letter in this
Agreement.

1.06 If any covenant or other provision of this Agreement is invalid, illegal or
incapable of being enforced by reason of any rule of law or public policy such
covenant or other provision will be severed; all other terms and conditions of
this Agreement will, nevertheless, remain in full force and effect and no
covenant or provision will be deemed dependent upon any other covenant or
provision unless so expressed herein.

ARTICLE 2 GRANT OF OPTION

2.01 The Company grants Quan an irrevocable, non-transferable and non-assignable
option (the "Option") to purchase Optioned Shares for the Exercise Price on the
terms and other conditions of this Agreement.

2.02 It is a condition that

(a) there is available to Quan under the Securities Act an exemption from the
registration requirements and the prospectus requirements of the Securities Act
under Rule 504; and

(c) no action is required to be taken by the Company under Rule 701 or
applicable law of the State of California.


ARTICLE 3 EXERCISE OF OPTION

3.01 Quan may exercise the Option from time to time with respect to all or part
of the Optioned Shares or Optioned Shares remaining unpurchased.

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3.02 The Option will be exercised by Quan or his legal personal representative
by delivering to the principal business office of the Company in Vancouver,
British Columbia or such other place as is designated by the Company from time
to time:

(a) a notice stating the number of Optioned Shares being purchased; and

(b) a certified check or bank draft in favor of the Company drawn in United
States dollars for the product of the number of Optioned Shares being purchased
and the Exercise Price.

3.03 On exercise of Option, the Company will forthwith cause its transfer agent
to deliver to any of the Quan, his legal representative or such other person as
Quan may otherwise direct in the notice of exercise of the Option a certificate
or certificates in the name of any of the Quan, his legal representative or such
other person as Quan may otherwise direct in the notice of exercise of the
Option representing such number of Shares for which payment has been made.

3.04 Nothing in this Agreement obligates or will obligate Quan to purchase or
pay for any Optioned Shares except those Optioned Shares in respect of which
Quan has exercised the Option in the manner prescribed.

3.05 If the Optioned Shares have not been registered under the Securities Act,
the certificate or certificates representing the Optioned Shares, will be
endorsed with a legend as follows:

THE SHARES EVIDENCED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933 (THE "ACT"), THE DELAWARE STATE SECURITIES ACT OR ANY
OTHER APPLICABLE SECURITES ACT AND MAY NOT BE SOLD OR OTHERWISE TRANSFERRED
EXCEPT (1) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE ACT AND
SUCH STATE SECURITIES LAWS, OR (2) AT THE OPTION OF THE COMPANY, UPON DELIVERY
TO THE COMPANY OF AN OPINION OF COUNSEL FOR THE TRANSFEROR, REASONABLY
SATISFACTORY TO COUNSEL FOR THE COMPANY, THAT SUCH REGISTRATION IS NOT REQUIRED.

3.06 Quan acknowledges that the Option and the Optioned Shares, if any, are
issued pursuant to the exemption from the registration requirements contained in
Regulation D of Rule 504 of the Securities Act and that:

(a) the Shares and the Optioned Shares have not been registered under the
Securities Act or any state or provincial securities laws, and are being offered
in reliance on certain exemptions contained in the Securities Act and such state
or provincial securities laws;

(b) if the Optioned Shares have not been registered under the Securities Act,
the Optioned Shares will not be sold or transferred except pursuant to:

(i) an effective registration statement under the Securities Act and any
applicable state securities laws;

(ii) Rule 144 promulgated under the Securities Act; or

(ii) an opinion of counsel satisfactory to the Company to the effect that such
registration is not required; and

<PAGE>


(c) the Option is non-transferable regardless of whether or not there exists an
exemption under which the Option could be sold or transferred to a third party;
and

(d) no federal, state or provincial agency has made any finding or determination
as to the fairness of the investment, or any recommendation or endorsement of
the Shares or any other securities of the Company

ARTICLE 4 REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE QUAN

4.01 Quan represents and warrants to, and covenants with, the Company that:

(a) Quan is resident for securities law purposes in California; and

(b) the grant of the Option has not been made by expectation of employment or
continued employment.

ARTICLE 5 TERMINATION OF OPTION

5.01 The Option and this Agreement will terminate on the earlier of the Expiry
Date or:

(a) when Quan ceases to be a financial consultant of the Company;

(b) six months after the date of the death of the Quan;

(c) the time at which any securities regulatory authority issues against Quan a
cease trade order based on a determination that trading of the securities of the
Company by Quan is not in the best interests of the public; or

(d) the time at which the Company determines that any of the Quan, his legal
representative or such other person as is designated by Quan in the notice
exercising the Option as the person to whom Optioned Shares are to be issued is
in breach of any condition in this Agreement or applicable law relating to the
sale by the Quan, his legal representative or such other person as is designated
of any of the Optioned Shares.

ARTICLE 6 PROHIBITION ON DEALING WITH THE OPTION AND RESTRICTIONS ON SALE OF
OPTIONED SHARES

6.01 Quan will not pledge, mortgage, hypothecate, sell, assign or transfer, or
agree to pledge, mortgage, hypothecate, sell, assign or transfer the Option or
any interest in, or right to, the Option.

6.02 The Optioned Shares will be sold in accordance with Rule 144 form time to
time.

ARTICLE 7 ADJUSTMENT OF NUMBER OF OPTIONED SHARES

7.01 The number of Optioned Shares deliverable upon the exercise of the Option
will be adjusted as follows:

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(a) if there is any subdivision or subdivisions of the Shares while the Option
is in effect into a greater number of Shares, the Company will deliver at the
time of purchase of Optioned Shares, in addition to the number of Optioned
Shares in respect of which the right to purchase is being exercised, such
additional number of Optioned Shares as result from such subdivision or
subdivisions without Quan making any additional payment or giving any other
consideration;

(b) if there is any consolidation or consolidations of the Shares while the
Option is in effect into a lesser number of Shares, the Company will deliver and
Quan will accept, at the time of purchase of Optioned Shares, instead of the
number of Optioned Shares in respect of which the right to purchase is being
exercised, the lesser number of Optioned Shares as a result from such
consolidation or consolidations;

(c) if there is any change of the Shares of the Company while the Option is in
effect, the Company will deliver at the time of purchase of Optioned Shares the
number of Optioned Shares of the appropriate class resulting from the such
change as Quan would have been entitled to receive in respect of the number of
Optioned Shares so purchased had the right to purchase been exercised before
such change;

(d) if there is any capital reorganization, reclassification or change of
outstanding equity shares, other than a change in the par value, of the Company
or if there is any consolidation, merger or amalgamation of the Company with or
into any other company or any sale of the property of the Company as or
substantially as an entirety at any time while the Option is in effect, Quanmay
purchase and receive, instead of the Optioned Shares purchasable and receivable
upon the exercise of the Option, the kind and amount of Shares and other
securities and property receivable upon such capital reorganization,
reclassification, change, consolidation, merger, amalgamation or sale which the
holder of a number of Shares equal to the number of Optioned Shares purchasable
and receivable upon the exercise of the Option would have received as a result
of such event.

The subdivision or consolidation of Shares at any time outstanding into a
greater or lesser number of Shares, whether with or without par value, will not
be deemed to be a capital reorganization or a reclassification of the capital of
the Company for the purposes of this paragraph (d).

7.02 The adjustments provided for in section 7.01 are cumulative.

7.03 The Company will not be required to issue fractional Shares in satisfaction
of its obligations and any fractional interest in a Share that would, except for
the provisions of this section, be deliverable upon the exercise of the Option
will be cancelled and not be deliverable by the Company.

7.04 If any questions at any time arise with respect to the exercise price or
number of Optioned Shares deliverable upon exercise of the Option, such
questions will be conclusively determined by the Company's auditors, or, if they
decline to so act, any other firm of chartered accountants in Vancouver, British
Columbia that the Company may designate and who will have access to all
appropriate records and such determination will be binding upon the Company and
the Quan.

<PAGE>


7.05 Quan will have no rights whatsoever as a shareholder in respect of any of
the Optioned Shares, including any right to receive dividends or other
distributions, other than in respect of Optioned Shares in respect of which Quan
has exercised its Option and which Quan has taken up and paid for.

7.06 The Company represents and warrants to, and covenants with Quan that:

(a) the Company will use its best efforts to proceed to have its Shares
registered under the Securities Exchange Act of 1934 and if the policies of
applicable securities administrators change to become a reporting issuer in
British Columbia; and

(b) the Company will reserve in its treasury sufficient Shares to permit the
issuance and allotment of the Optioned Shares to Quan if the Option or any part
thereof is exercised.

ARTICLE 8 GENERAL PROVISIONS

8.01 Time is of the essence of the performance of every obligation under this
Agreement, and no failure or lack of diligence by any party in proclaiming or
seeking redress for any violation of, or insisting on strict performance of, any
provision of this Agreement will prevent a subsequent violation of that
provision, or of any other provision, from giving rise to any remedy that would
be available if it were an original violation of that provision or another
provision.

8.02 This Agreement will be binding upon and enure to the benefit of the
respective heirs, executors, administrators and other legal representatives and,
to the extent permitted hereunder, the respective successors and assigns, of the
parties.

8.03 Unless otherwise provided herein, any notice, payment or other
communication to a party under this Agreement may be made, given or served by
delivery, telecopy or email and addressed as follows:

(a) Quan:

Mr. Darryl Quan
1090 Moreno Avenue, Palo Alto, Ca  94303

Fax: 650-813-2960
Email: darryl_quan@yahoo.com

(b) Vibro-Tech

Vibro-Tech Industries, Inc.
2000 Cathedral Place
925 West Georgia Street
Vancouver, B.C. V6C 2C2

Attention: Mr. Jock Chong, President and Chief Executive Officer

Fax: 604-687-7588
Email:  info@vibro-tech.com


<PAGE>

with a copy to:

Vibro-Tech Industries, Inc.
Suite 600, 1090 West Pender Street
Vancouver, B. C. V6E 2N7

Attention: Mr. Gary MacDonald, Secretary

Fax: 604-683-8791
Email: gary@macdonald.com

8.04 Any notice,  payment or other  communication  so  delivered,  telecopied or
emailed will be deemed to have been given or served at the time of delivery or
transmission by telecopy or email.

8.05 A party may by notice change its address for service.

8.06 This Agreement constitutes the entire agreement between the parties and
supercedes all previous agreements or understandings between the parties in any
way relating to its subject matter and the Company has made not representations,
inducements, warranties or promises concerning this Agreement or the matters
referred to herein which are not embodied in this Agreement.

ARTICLE IX ARBITRATION

9.01 If any difference or dispute will arises between the Parties that cannot be
resolved between the Parties by negotiation with regard to mutual benefit and
equality then in respect to any matter, such difference or dispute will be
arbitrated or submitted to arbitration under and pursuant to the Commercial
Arbitration Act (British Columbia).

9.02 Such dispute will be referred by the Party affected to an arbitrator who
will be agreed upon by such Participants and, failing such agreement within four
weeks after notice by any such Party, then an arbitrator may be named as
provided in the Commercial Arbitration Act but in all cases the arbitration will
be conducted by a sole arbitrator who may be a member of the firms of auditors
of Vibro-Tech.

9.03 The arbitrator so appointed will sit in Vancouver, British Columbia, unless
there is unanimous agreement of such Parties that he will sit at another place,
and will hear and dispose of such dispute in such manner as the arbitrator, in
his discretion, will determine, but in so doing will be required to receive the
submissions of such Parties.

9.04 The decision of the arbitrator will be rendered in writing with all
reasonable speed and will be final and binding upon such Participants.

9.05 If the Parties to the arbitration cannot agree on the respective shares of
the costs of arbitration to be borne by them, the arbitrator will determine what
part of the costs and expenses incurred in any such proceeding will be borne by
each of them.


ARTICLE X ASSIGNMENT

10.01 This agreement may not be assigned, set over, transferred, in whole or in
part by any party without the written consent of the other party, which consent
may be unreasonably withheld.

<PAGE>


ARTICLE XI GENERAL

11.01 The provisions of this Agreement constitute the entire agreement between
the parties and supersede all previous communications, representations and
agreements, whether verbal or written, between the parties with respect to the
subject matter hereof.

11.02 The captions, section numbers and article numbers appearing in this
Agreement are inserted for convenience of reference only and will in no way
define, limit, constrict or describe the scope or intent of this Agreement nor
in any way affect this Agreement.

11.03 In this Agreement, wherever the context requires, words importing the
singular number will include the plural and vice versa, words importing the
masculine gender will include the feminine and neuter genders and words
importing persons will include firms and corporations and vice versa.

11.04 Unless otherwise stated, a reference in this Agreement to a numbered or
lettered article, section, paragraph or subparagraph refers to the article,
section, paragraph or subparagraph bearing that number or letter in this
Agreement.

11.04 If any covenant or other provision of this Agreement is invalid, illegal
or incapable of being enforced by reason of any rule of law or public policy
such covenant or other provision will be severed; all other terms and conditions
of this Agreement will, nevertheless, remain in full force and effect and no
covenant or provision will be deemed dependent upon any other covenant or
provision unless so expressed herein.


IN WITNESS WHEREOF this Agreement has been executed by the parties hereto on the
day and year first above written.

VIBRO-TECH INDUSTRIES, INC.


By: /s/ Gary MacDonald, Secretary


/s/ DARRYL QUAN