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                                                                    EXHIBIT 10.2
                               AMENDMENT AGREEMENT

                             AS OF NOVEMBER 17, 2004

         Re:      PRIVATE PLACEMENT OF COMMON STOCK AND WARRANTS OF AMERICAN
                  ORIENTAL BIOENGINEERING, INC. INCREASE OF MAXIMUM OFFERING
                  AMOUNT FROM UP TO $4,000,000 TO UP TO $6,000,000.

TO THE SUBSCRIBER IDENTIFIED ON THE SIGNATURE PAGE HERETO:

                  Reference is made to (1) that certain Subscription Agreement
(the "SUBSCRIPTION AGREEMENT") by and among American Oriental Bioengineering,
Inc., a Nevada corporation (the "COMPANY"), and the subscriber identified on the
signature page thereto (the "SUBSCRIBER"), and (2) that certain Escrow Agreement
(the "ESCROW AGREEMENT") by and among the Company, the Subscriber and Grushko &
Mittman, P.C. (the "ESCROW AGENT"). Capitalized terms used but not defined
herein shall have the same meanings as set forth in the Subscription Agreement.
Each of the Subscription Agreement and the Escrow Agreement relate to the
proposed private placement pursuant to Regulation D under the Securities Act of
1933, as amended, of the Common Stock and the Warrants of the Company to the
Subscriber, on the terms and subject to the conditions set forth therein. Each
of the Subscription Agreement and the Escrow Agreement is hereby amended as
follows:

1.       SUBSCRIPTION AGREEMENT.
         -----------------------

         The first sentence of the second "whereas" clause of the Subscription
Agreement is hereby amended to read in its entirety as follows:

           "WHEREAS, the parties desire that, upon the terms and subject to the
           conditions contained herein, the Company shall issue and sell to the
           Subscribers, as provided herein, and the Subscribers shall purchase,
           in the aggregate, up to $6,000,000.00 (the "PURCHASE PRICE") of the
           Company's common stock, $.001 par value (the "COMMON STOCK" or
           "SHARES"), and share purchase warrants in the form attached hereto as
           EXHIBITS A1 AND A2 (the "WARRANTS"), to purchase shares of Common
           Stock (the "WARRANT SHARES")."

2.       ESCROW AGREEMENT.
         -----------------

         (i) The first "whereas" clause of the Escrow Agreement is hereby
amended to read in its entirety as follows:

         "WHEREAS, the Company and Subscribers have entered into a Subscription
         Agreement calling for the sale by the Company to the Subscriber of
         $.001 par value Common Stock of the Company ("Common Stock") for an
         aggregate purchase price of up to $6,000,000.00 and the issuance of
         Warrants in the amounts set forth on Schedule A hereto; and".

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         (ii) Section 1.1(d) of the Escrow Agreement is hereby amended to read
in its entirety as follows:

         "(d)     "Escrowed Payment" means an aggregate cash payment of up to
                  $6,000,000.00 which is the Purchase Price as defined in the
                  Subscription Agreement;".

         (iii) Section 3.1(e) of the Escrow Agreement is hereby amended to read
in its entirety as follows:

         "(e)     In the event executed Subscription Agreements executed by
                  Subscribers for an aggregate Purchase Price of up to
                  $6,000,000.00 and Escrowed Payments for an aggregate of up to
                  $6,000,000.00 have not been received by the Escrow Agent on or
                  before November 30, 2004, the Escrow Agent shall immediately
                  release the Company Documents to the Company and release the
                  Subscriber Documents and Escrowed Payments to the
                  Subscribers.".

3.       COUNTERPARTS/EXECUTION.
         -----------------------

         This Amendment Agreement may be executed in any number of counterparts
and by different signatories hereto on separate counterparts, each of which,
when so executed, shall be deemed an original, but all such counterparts shall
constitute but one and the same instrument. This Amendment Agreement may be
executed by facsimile transmission and delivered by facsimile transmission.

                                        Very truly yours,

                                        AMERICAN ORIENTAL BIOENGINEERING, INC.

                                        By: __________________________
                                        Name: Lily Li
                                        Title: Chief Operating Officer

         The undersigned acknowledges the above and agrees to be bound as of the
date first written above.

                                            ESCROW AGENT:

                                            ____________________________________
                                            Grushdo & Mittman, P.C.

                                            SUBSCRIBER:

                                            By: ________________________________

                                            Print Name:  _______________________

                                            Title/Entity:  _____________________THIS DEBENTURE, AND THE SECURITIES INTO WHICH IT IS CONVERTIBLE (COLLECTIVELY,
THE "SECURITIES"), HAVE NOT BEEN REGISTERED WITH THE UNITED STATES SECURITIES
EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE.  THE SECURITIES
ARE BEING OFFERED PURSUANT TO A SAFE HARBOR FROM REGISTRATION UNDER REGULATION
S AND/OR REGULATION D PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
(THE "ACT"). THE SECURITIES ARE "RESTRICTED" AND MAY NOT BE OFFERED OR SOLD IN
THE UNITED STATES OR TO U.S. PERSONS (AS SUCH TERM IS DEFINED IN REGULATION S
PROMULGATED UNDER THE ACT) UNLESS THE SECURITIES ARE REGISTERED UNDER THE ACT,
PURSUANT TO REGULATION S AND/OR REGULATION D OR PURSUANT TO AVAILABLE
EXEMPTIONS FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND THE COMPANY WILL
BE PROVIDED WITH OPINION OF COUNSEL OR OTHER SUCH INFORMATION AS IT MAY
REASONABLY REQUIRE TO CONFIRM THAT SUCH EXEMPTIONS ARE AVAILABLE.  FURTHER
HEDGING TRANSACTION INVOLVING THE SECURITIES MAY NOT BE MADE EXCEPT IN
COMPLIANCE WITH THE ACT.

                            DEBENTURE

                       UNICO, INCORPORATED

                     8% Convertible Debenture

                      Due September 16, 2004

No. 01                                                           $125,000.00

     This Debenture is issued by Unico, Incorporated, an Arizona corporation
(the "Company"), and Kentan Limited Corp. (together with its permitted
successors and assigns, the "Holder") pursuant to exemptions from registration
under the Securities Act of 1933, as amended. This Debenture is issued in
replacement of a similar Debenture issued to the Holder for the same principal
amount bearing the same date, in order to correct certain errors in the first
Debenture such as incorrect optional conversion features.

                            ARTICLE I.

     Section 1.01   Principal and Interest.  For value received on March 16,
2004, the Company hereby promises to pay to the order of Holder in lawful
money of the United States of America and in immediately available funds the
principal sum of $125,000.00, together with interest on the unpaid principal
of this Debenture at the rate of eight percent (8%) per year (computed on the
basis of the 365-day year and the actual days elapsed) from the date of this
Debenture until paid.  At the Company's option, the entire principal amount
and all accrued interest shall be either (a) paid to the Holder on or before
the due date of this Debenture or (b) converted in accordance with Section
1.02 herein.

     Section 1.02   Optional Conversion.  The Holder is entitled, at its
option, to convert, at any time and from time to time, until payment in full
of this Debenture, all or any part of the principal amount of this Debenture,
plus accrued interest, into shares (the "Conversion Shares") of the Company's
common stock, par value $0.10 per share ("Common Stock"), at a price per share
equal to fifty percent (50%) of the closing bid price of the Common Stock on
the date that the Company receives notice of conversion, or the lowest price
available in the Company's 1-E Offering Circular, whichever is lower. To
convert this debenture, the Holder shall deliver written notice (the
"Conversion Notice") thereof, such Conversion Notice containing such
information necessary including amount of conversion and number of shares, to
the Company at its address set forth herein.  The date upon which the
conversion shall be effective (the "Conversion Date") shall be deemed to be
the date set forth in the Conversion Notice.  The Conversion Shares shall be
delivered to the Holder at the address indicated herein.

     The Company is entitled, at its option, to convert, at any time and from
time to time, until payment in full of this Debenture, all or any part of the
principal amount of this Debenture, plus accrued interest, into shares (the
"Conversion Shares") of the Company's common stock, par value $0.10 per share
("Common Stock"), at a price per share equal to fifty percent (50%) of the
closing bid price of the Common Stock on the date that the Company issues such
notice of conversion, or the lowest price available in the Company's 1-E
Offering Circular, whichever is lower. To convert this debenture, the Company
shall deliver written notice (the "Conversion Notice") thereof, such
Conversion Notice containing such information necessary including amount of
conversion and number of shares, to the Holder at its address set forth
herein.  The date upon which the conversion shall be effective (the
"Conversion Date") shall be deemed to be the date set forth in the Conversion
Notice.  The Conversion Shares shall be delivered to the Holder at the address
indicated herein.

     Section 1.03  Reservation of Common Stock.  The Company shall reserve and
keep available out of its authorized but unissued shares of Common Stock,
solely for the purpose of effecting the conversion of this Debenture, such
number of shares of Common Stock as shall from time to time be sufficient to
effect such conversion, based on the Conversion Price.  If at any time the
Company does not have a sufficient number of Conversion Shares authorized and
available, then the Company shall call and hold a special meeting of its
stockholders within sixty (60) days of that time for the sole purpose of
increasing the number of authorized shares of Common Stock.

     Section 1.04   Registration Rights.  The Company is obligated to register
the resale of the Conversion Shares under the Securities Act of 1933, as
amended, or provide Holder with an appropriate exemption from registration.

     Section 1.05   Interest Payments.  The interest so payable will be paid
at the time of maturity or conversion to the person in whose name this
Debenture is registered.  At the time such interest is payable, the Company,
in its sole discretion, may elect to pay interest in cash or in the form of
Common Stock.  If paid in Common Stock, the amount of stock to be issued shall
be calculated in accordance with the formula and procedure set forth in
Section 1.02 above.

     Section 1.06   Right of Redemption.  The Company shall have the right to
redeem, with thirty (30) business days advance notice to the Holder, any or
all outstanding Debentures remaining in its sole discretion ("Right of
Redemption").  The redemption price shall be equal to 100% of the face amount
of the Debenture redeemed plus all accrued interest ("Redemption Price").

     Section 1.07   Subordinated Nature of Debenture.  This Debenture and all
payments hereon, including principal or interest, shall be subordinated and
junior in right of payment to all accounts payable of the Company incurred in
the ordinary course of business and/or bank debt of the Company not to exceed
$30,000.

                           ARTICLE II.

     Section 2.01   Amendments and Waiver of Default.  The Debenture may be
amended with the consent of Holder.  Without the consent of Holder, the
Debenture may be amended to cure any ambiguity, defect or inconsistency, to
provide assumption of the Company obligations to the Holder or to make any
change that does not adversely affect the rights of the Holder.

                           ARTICLE III.

     Section 3.01   Events of Default.  An Event of Default is defined as
follows: (a) failure by the Company to pay amounts due hereunder within
fifteen (15) days of the date of maturity of this Debenture; (b) failure by
the Company for thirty (30) days after notice to it to comply with any of its
other agreements in the Debenture; (c) events of bankruptcy or insolvency; (d)
a breach by the Company of its obligations under the Registration Rights
Agreement which is not cured by the Company within ten (10) days after receipt
of written notice thereof.  The Holder may not enforce the Debenture except as
provided herein.

     Section 3.02   Failure to Issue Unrestricted Common Stock. As indicated
above, a breach by the Company under its obligation under the Registration
Rights Agreement shall be deemed an Event of Default, which if not cured with
ten (10) days, shall entitle the Holder accelerated full payment of all
debentures outstanding.  The Company acknowledges that failure to honor a
Notice of Conversion shall cause hardship to the Holder.

                           ARTICLE IV.

     Section 4.01   Anti-dilution.  In the event that the Company shall at any
time subdivide the outstanding shares of Common Stock, or shall issue a stock
dividend on the outstanding Common Stock, the Conversion Price in effect
immediately prior to such subdivision of the issuance of such dividend shall
be proportionately decreased and, in the event that the Company shall at any
time combine the outstanding shares of Common stock, the Conversion price in
effect immediately prior to such combination shall be proportionally
increased, effective at the close of business on the date of such subdivision,
dividend or combination as the case may be.

                            ARTICLE V.

     Section 5.01   Notice.  Notices regarding this debenture shall send to
the parties at the following addresses, unless a party notifies the other
parties, in writing, of a change of address:

If to the Company:     Unico, Incorporated
                       6475 Grandview Avenue
                       Magalia, CA 95954
                       Telephone: (530) 873-4394
                       Attn:  Ray Brown, President

If to the Holder:      Kentan Limited Corp.
                       BCM Cape Building
                       Leeward Highway
                       Providenciales
                       Turks and Caicos, BWI
                       Attn:  Hugh O'Neill

     Section 5.02   Governing Law.  This Debenture shall be deemed to be made
under and shall be construed in accordance with the laws of the State of
California without giving effect to the principals of conflict of the laws
thereof.  Each of the parties consents to the jurisdiction of the U.S.
District Court sitting in the District of the State of California or the state
courts of the State of California sitting in Riverside in connection with any
dispute arising under this debenture and hereby waives, to the maximum extent
permitted by law, any objection, including the objection based on forum non
conveniens to the bringing of any such proceeding in such jurisdictions.

     Section 5.03   Severability.  The invalidity of any of the provisions of
this Debenture shall not invalidate or otherwise affect any of the other
provisions of this Debenture, which shall remain in full force effect.

     Section 5.04   Entire Agreement and Amendments.  This Debenture
represents the entire agreement between the parties hereto with respect to the
subject matter hereof and there are no representations, warranties or
commitments, except as set forth herein.  This Debenture may be amended only
by an instrument in writing executed by the parties hereto.

     Section 5.05   Counterparts.  This Debenture may be executed in multiple
counterparts, each of which shall be an original, but all of which shall be
deemed to constitute and instrument.

     IN WITNESS WHEREOF, with the intent to legally bound hereby, the Company
has executed this Debenture as of the date first written above.

               UNICO, INCORPORATED

                   /s/ Ray C. Brown
               By:___________________________
               Name: Ray C. Brown
               Title: Chief Executive Officer

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