Document:

exv4w3

 

EXHIBIT 4.3

SECOND AMENDMENT TO RIGHTS AGREEMENT

     THIS SECOND AMENDMENT TO RIGHTS AGREEMENT (the “Amendment”) is made as of November 30, 2006,
between The Allied Defense Group, Inc., formerly known as Allied Research Corporation, a Delaware
corporation (the “Company”), and Mellon Investor Services, LLC, a New Jersey limited liability
company (the “Rights Agent”).

     WHEREAS, the Company and the Rights Agent are parties to that certain Rights Agreement dated
as of June 6, 2001, as amended by that certain First Amendment To Rights Agreement dated as of June
15, 2006 (collectively the “Original Rights Agreement”);

     WHEREAS, Section 26 of the Original Rights Agreement provides, in part, that for so long as
the Rights (as defined in the Agreement) are redeemable, the Agreement may be supplemented or
amended without the approval of holders of the Rights;

     WHEREAS, the Rights are currently redeemable; and

     WHEREAS, the Board of Directors of the Company has determined in good faith that the
amendments to the Agreement set forth herein are desirable and, pursuant to Section 26 of the
Agreement, has duly authorized such amendments to the Agreement.

     NOW THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the Company and the Rights Agent hereby agree as follows:

     1. DEFINITIONS. Except as otherwise set forth in this Amendment, each capitalized term used
in this Amendment shall have the meaning for such term set forth in the Original Rights Agreement.

     2. DEFINITION OF AGREEMENT. From and after the date hereof, all references in the Original
Rights Agreement to the “Agreement” shall mean and refer to the Original Rights Agreement, as
modified by this Amendment.

     3. DEFINITION OF ACQUIRING PERSON. Section 1(a) of the Original Rights Agreement is hereby
amended by deleting all references therein to “20%” and replacing them with “25%.”

     4. COUNTERPARTS. This Amendment may be executed in one or more counterparts, each of which
shall constitute an original and all of which together shall constitute but one original;
provided, however, this Amendment shall not be effective unless and until signed by the Company and
the Rights Agent.

 

 

     5. GOVERNING LAW. This Amendment shall be deemed to be a contract made under the laws of
the State of Delaware and for all purposes shall be governed by and construed in accordance with
the internal laws of Delaware applicable to contracts to be made and performed entirely within
Delaware; provided, however, that all provisions regarding the rights,
duties and obligations of the Rights Agent shall be governed by and construed in accordance
with the laws of the State of New York applicable to contracts made and to be performed entirely
within such State.

     6. SEVERABILITY. If any term, provision, covenant or restriction of this Amendment is held
by a court of competent jurisdiction or other authority to be invalid, void or unenforceable, the
remainder of the terms, provisions, covenants and restrictions of this Amendment shall remain in
full force and effect and shall in no way be affected, impaired or invalidated.

     7. EFFECTIVE DATE. This Amendment shall become effective as of the date first written
above.

     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed and
attested as of the date first written above.

	 	 	 	 	 
	 	THE ALLIED DEFENSE GROUP, INC.

 	 
	 	By:  	 	 
	 	 	John J. Marcello, 	 
	 	 	President and Chief Executive Officer 	 
	 

	 	 	 	 	 
	 	MELLON INVESTOR SERVICES, LLC,

as Rights Agent

 	 
	 	  	By:exv4w5

 

Exhibit 4.5

FORM OF WARRANT AGREEMENT

     This Agreement made as
of                  
  , 2006 between China Healthcare Acquisition Corp., a
Delaware corporation, with offices at 1233 Encino Drive, Pasadena, California 91108
(“Company”), and American Stock Transfer & Trust Company, a New York corporation, with
offices at                  
                  
      (“Warrant Agent”).

     WHEREAS, the Company is
engaged in a public offering (“Public Offering”) of Units
(“Units”) and, in connection therewith, has determined to issue and deliver (i) up to
                   
  Warrants, including               
       Warrants that may be issued to Ferris, Baker Watts,
Incorporated (“FBW”) upon exercise of its over-allotment option, (“Public
Warrants”) to the public investors, and (ii) up to 1,000,000 Warrants to FBW or its designees
(“Underwriter’s Warrants”) and (iii) 3,000,000 Warrants to the Chairman of the
Board
of Directors of the Company (“Insider’s Warrants” and, together with the Public Warrants
and the Underwriter’s Warrants, the “Warrants”), each Warrant evidencing the right of the
holder thereof to purchase one share of common stock, par value $.0001 per share, of the Company’s
Common Stock (“Common Stock”) for $5.00 (or, with respect to the Underwriter’s warrants,
$6.25), subject to adjustment as described herein; and

     WHEREAS, the Company has filed
with the Securities and Exchange Commission a Registration
Statement, No. 333-135705 on Form S-1 (“Registration Statement”) for the
registration,
under the Securities Act of 1933, as amended (“Act”) of, among other securities, the
Warrants and the Common Stock issuable upon exercise of the Warrants; and

     WHEREAS, the Company desires
the Warrant Agent to act on behalf of the Company, and the
Warrant Agent is willing to so act, in connection with the issuance, registration, transfer,
exchange, redemption and exercise of the Warrants; and

     WHEREAS, the Company desires
to provide for the form and provisions of the Warrants, the terms
upon which they shall be issued and exercised, and the respective rights, limitation of rights, and
immunities of the Company, the Warrant Agent, and the holders of the Warrants; and

     WHEREAS, all acts and things
 have been done and performed which are necessary to make the
Warrants, when executed on behalf of the Company and countersigned by or on behalf of the Warrant
Agent, as provided herein, the valid, binding and legal obligations of the Company, and to
authorize the execution and delivery of this Agreement.

     NOW, THEREFORE, in
consideration of the mutual agreements herein contained, the parties hereto
agree as follows:

     1. Appointment of
Warrant Agent. The Company hereby appoints the Warrant Agent to act
as agent for the Company for the Warrants, and the Warrant Agent hereby accepts such appointment
and agrees to perform the same in accordance with the terms and conditions set forth in this
Agreement.

     2. Warrants.

     2.1 Form of Warrant.
Each Warrant shall be issued in registered form only, shall be in
substantially the form of Exhibit A hereto, the provisions of which are incorporated herein
and shall be signed by, or bear the facsimile signature of, the Chairman of the Board, Chief
Executive Officer or President, and Chief Financial Officer, Secretary or Assistant Secretary of
the Company and shall bear a facsimile of the Company’s seal. In the event the person whose
facsimile signature has been placed upon any Warrant shall have ceased to serve in the capacity in
which such person signed the Warrant before such Warrant is issued, it may be issued with the same
effect as if he or she had not ceased to be such at the date of issuance.

 

 

     2.2 Effect of
 Countersignature. Unless and until countersigned by the Warrant Agent
pursuant to this Agreement, a Warrant shall be invalid and of no effect and may not be exercised by
the holder thereof.

     2.3 Registration.

     2.3.1 Warrant Register.
The Warrant Agent shall maintain books (“Warrant
Register”), for the registration of original issuance and the registration of transfer of the
Warrants. Upon the initial issuance of the Warrants, the Warrant Agent shall issue and register the
Warrants in the names of the respective holders thereof in such denominations and otherwise in
accordance with instructions delivered to the Warrant Agent by the Company.

     2.3.2 Registered Holder.
Prior to due presentment for registration of transfer of any
Warrant, the Company and the Warrant Agent may deem and treat the person in whose name such Warrant
shall be registered upon the Warrant Register (“Registered Holder”), as the absolute owner
of such Warrant and of each Warrant represented thereby (notwithstanding any notation of ownership
or other writing on the Warrant Certificate made by anyone other than the Company or the Warrant
Agent), for the purpose of any exercise thereof, and for all other purposes, and neither the
Company nor the Warrant Agent shall be affected by any notice to the contrary.

     2.4 Detachability of
Warrants. The securities comprising the Units will not be
separately transferable until 90 days after the date hereof unless FBW informs the Company of its
decision to allow earlier separate trading, but in no event will FBW allow separate trading of the
securities comprising the Units until the Company files a Current Report on Form 8-K which includes
an audited balance sheet reflecting the receipt by the Company of the gross proceeds of the Public
Offering including the proceeds received by the Company from the exercise of the Underwriter’s
over-allotment option, if the over-allotment option is exercised prior to the filing of the Form
8-K.

     3. Terms and Exercise
of Warrants.

     3.1 Warrant Price.
Each Warrant shall, when countersigned by the Warrant Agent,
entitle the registered holder thereof, subject to the provisions of such Warrant and of this
Warrant Agreement, to purchase from the Company the number of shares of Common Stock stated
therein, at the price of $5.00 per whole share, subject to the adjustments provided in Section 4
hereof and in the last sentence of this Section 3.1. The term “Warrant Price” as used in this
Warrant Agreement refers to the price per share at which Common Stock may be purchased at the time
a Warrant is exercised. The Company in its discretion may lower the Warrant Price at any time prior
to the Expiration Date; provided, however, that any such change in the Warrant Price shall not take effect for at least ten (10) business days
from the date the Company publicly announces that it will lower the Warrant Price, and any change in the Warrant Price must apply
equally to all of the Warrants. The Underwriter’s Warrants shall have the same terms and be in the
same form as the Public Warrants, except that the Underwriter’s Warrants shall have an exercise
price of $6.25 per whole share, subject to adjustment as provided in Section 4 hereof.

     3.2 Duration of Warrants.
 A Warrant may be exercised only during the period
(“Exercise Period”) commencing on the later of the consummation by the Company of a merger,
capital stock exchange, asset acquisition or other similar business combination (“Business
Combination”) (as described more fully in the Company’s Registration Statement) or   
   ,
2007, and terminating at 5:00 p.m., New York City local time on the earlier to occur of (i)
        , 2011 or (ii) the date fixed for redemption of the Warrants as
provided in Section 6 of this
Agreement (“Expiration Date”). Except with respect to the right to receive the Redemption
Price (as set forth in Section 6 hereunder), each Warrant not exercised on or before the Expiration
Date shall become void, and all rights thereunder and all rights in respect thereof under this
Agreement shall cease at the close of business on the Expiration Date. The Company in its sole
discretion may extend the duration of the Warrants by delaying the Expiration Date; provided,
however, that any extension of the duration of the Warrants must apply equally to all of the
Warrants.

     3.3 Exercise of Warrants.

     3.3.1 Payment. Subject to the provisions of the Warrant and this Warrant Agreement, a
Warrant, when countersigned by the Warrant Agent, may be exercised by the registered holder thereof
by surrendering it, at the office of the Warrant Agent, or at the office of its successor as
Warrant Agent, in the Borough of Manhattan, City and State of New York, with the subscription form,
as set forth in the Warrant, duly executed, and by paying in full,

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in lawful money of the United States, in cash, good
certified check or good bank draft payable
to the order of the Company (or as otherwise agreed to by the Company), the Warrant Price for each
full share of Common Stock as to which the Warrant is exercised and any and all applicable taxes
due in connection with the exercise of the Warrant, the exchange of the Warrant for the Common
Stock, and the issuance of the Common Stock.

     3.3.2 Issuance of
Certificates. As soon as practicable after the exercise of any
Warrant and the clearance of the funds in payment of the Warrant Price, the Company shall issue to
the registered holder of such Warrant a certificate or certificates for the number of full shares
of Common Stock to which he, she or it is entitled, registered in such name or names as may be directed by
him, her or it, and if such Warrant shall not have been exercised in full, a new countersigned
Warrant for the number of shares as to which such Warrant shall not have been exercised.
Notwithstanding the foregoing, the Company shall not be obligated to deliver any securities
pursuant to the exercise of a Warrant unless a registration statement under the Act with respect to
the Common Stock is effective. Warrants may not be exercised by, or securities issued to, any
registered holder in any state in which such exercise would be unlawful. In no event shall the
Company be obligated to settle any Warrant, in whole or in part, for
cash. Notwithstanding any language to
the contrary herein, any and all Warrants can expire unexercised or unredeemed.

     3.3.3 Valid Issuance.
All shares of Common Stock issued upon the proper exercise of a
Warrant in conformity with this Agreement shall be validly issued, fully paid and nonassessable.

     3.3.4 Date of Issuance.
Each person in whose name any such certificate for shares of
Common Stock is issued shall for all purposes be deemed to have become the holder of record of such
shares on the date on which the Warrant was surrendered and payment of the Warrant Price was made,
irrespective of the date of delivery of such certificate, except that, if the date of such
surrender and payment is a date when the stock transfer books of the Company are closed, such
person shall be deemed to have become the holder of such shares at the close of business on the
next succeeding date on which the stock transfer books are open.

     4. Adjustments.

     4.1 Stock Dividends —
Split-Ups. If after the date hereof, and subject to the
provisions of Section 4.6 below, the number of outstanding shares of Common Stock is increased by a
stock dividend payable in shares of Common Stock, or by a split-up of shares of Common Stock, or
other similar event, then, on the effective date of such stock dividend, split-up or similar event,
the number of shares of Common Stock issuable on exercise of each Warrant shall be increased in
proportion to such increase in outstanding shares of Common Stock.

     4.2 Aggregation of Shares.
 If after the date hereof, and subject to the provisions of
Section 4.6, the number of outstanding shares of Common Stock is decreased by a consolidation,
combination, reverse stock split or reclassification of shares of Common Stock or other similar
event, then, on the effective date of such consolidation, combination, reverse stock split,
reclassification or similar event, the number of shares of Common Stock issuable on exercise of
each Warrant shall be decreased in proportion to such decrease in outstanding shares of Common
Stock.

     4.3 Adjustments in
 Exercise Price. Whenever the number of shares of Common Stock
purchasable upon the exercise of the Warrants is adjusted, as provided in Section 4.1 and 4.2
above, the Warrant Price shall be adjusted (to the nearest cent) by multiplying such Warrant Price
immediately prior to such adjustment by a fraction (x) the numerator of which shall be the number
of shares of Common Stock purchasable upon the exercise of the Warrants immediately prior to such
adjustment, and (y) the denominator of which shall be the number of shares of Common Stock so
purchasable immediately thereafter.

     4.4 Replacement of
Securities upon Reorganization, etc. In case of any
reclassification or reorganization of the outstanding shares of Common Stock (other than a change
covered by Section 4.1 or 4.2 hereof or that solely affects the par value of such shares of Common
Stock), or in the case of any merger or consolidation of the Company with or into another
corporation (other than a consolidation or merger in which the Company is the continuing
corporation and that does not result in any reclassification or reorganization of the outstanding
shares of Common Stock), or in the case of any sale or conveyance to another corporation or entity
of the assets or other property of the Company as an entirety or substantially as an entirety in
connection with which the Company is

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dissolved, the Warrant holders shall thereafter have
the right to purchase and receive, upon
the basis and upon the terms and conditions specified in the Warrants and in lieu of the shares of
Common Stock of the Company immediately theretofore purchasable and receivable upon the exercise of
the rights represented thereby, the kind and amount of shares of stock or other securities or
property (including cash) receivable upon such reclassification, reorganization, merger or
consolidation, or upon a dissolution following any such sale or transfer, that the Warrant holder
would have received if such Warrant holder had exercised his, her or its Warrant(s) immediately
prior to such event; and if any reclassification also results in a change in shares of Common Stock
covered by Section 4.1 or 4.2, then such adjustment shall be made pursuant to Sections 4.1, 4.2,
4.3 and this Section 4.4. The provisions of this Section 4.4 shall similarly apply to successive
reclassifications, reorganizations, mergers or consolidations, sales or other transfers.

     4.5 Notices of Changes
in Warrant. Upon every adjustment of the Warrant Price or the
number of shares issuable upon exercise of a Warrant, the Company shall give written notice thereof
to the Warrant Agent, which notice shall state the Warrant Price resulting from such adjustment and
the increase or decrease, if any, in the number of shares purchasable at such price upon the
exercise of a Warrant, setting forth in reasonable detail the method of calculation and the facts
upon which such calculation is based. Upon the occurrence of any event specified in Sections 4.1,
4.2, 4.3 or 4.4, then, in any such event, the Company shall give written notice to the Warrant
holder, at the last address set forth for such holder in the warrant register, of the record date
or the effective date of the event. Failure to give such notice, or any defect therein, shall not
affect the legality or validity of such event.

     4.6 No Fractional
Shares. Notwithstanding any provision contained in this Warrant
Agreement to the contrary, the Company shall not issue fractional shares upon exercise of Warrants.
If, by reason of any adjustment made pursuant to this Section 4, the holder of any Warrant would be
entitled, upon the exercise of such Warrant, to receive a fractional interest in a share, the
Company shall, upon such exercise, round up or down to the nearest whole number the number of the
shares of Common Stock to be issued to the Warrant holder.

     4.7 Form of Warrant.
The form of Warrant need not be changed because of any adjustment
pursuant to this Section 4, and Warrants issued after such adjustment may state the same Warrant
Price and the same number of shares as is stated in the Warrants initially issued pursuant to this
Agreement. However, the Company may at any time in its sole discretion make any change in the form
of Warrant that the Company may deem appropriate and that does not affect the substance thereof,
and any Warrant thereafter issued or countersigned, whether in exchange or substitution for an
outstanding Warrant or otherwise, may be in the form as so changed.

     5. Transfer and
Exchange of Warrants.

     5.1 Registration of
Transfer. The Warrant Agent shall register the transfer, from time
to time, of any outstanding Warrant upon the Warrant Register, upon surrender of such Warrant for
transfer, properly endorsed with signatures properly guaranteed and accompanied by appropriate
instructions for transfer. Upon any such transfer, a new Warrant representing an equal aggregate
number of Warrants shall be issued and the old Warrant shall be cancelled by the Warrant Agent. The
Warrants so cancelled shall be delivered by the Warrant Agent to the Company from time to time upon
request.

     5.2 Procedure for Surrender
 of Warrants. Warrants may be surrendered to the Warrant
Agent, together with a written request for exchange or transfer, and thereupon the Warrant Agent
shall issue in exchange therefor one or more new Warrants as requested by the registered holder of
the Warrants so surrendered, representing an equal aggregate number of Warrants; provided, however,
that in the event that a Warrant surrendered for transfer bears a restrictive legend, the Warrant
Agent shall not cancel such Warrant and issue new Warrants in exchange therefor until the Warrant
Agent has received an opinion of counsel for the Company stating that such transfer may be made and
indicating whether the new Warrants must also bear a restrictive legend.

     5.3 Fractional Warrants.
The Warrant Agent shall not be required to effect any
registration of transfer or exchange which will result in the issuance of a warrant certificate for
a fraction of a warrant.

     5.4 Service Charges.
No service charge shall be made for any exchange or registration
of transfer of Warrants.

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     5.5 Warrant Execution and
Countersignature. The Warrant Agent is hereby authorized to
countersign and to deliver, in accordance with the terms of this Agreement, the Warrants required
to be issued pursuant to the provisions of this Section 5, and the Company, whenever required by
the Warrant Agent, will supply the Warrant Agent with Warrants duly executed on behalf of the
Company for such purpose.

     6. Redemption.

     6.1 Redemption. Subject
to Section 6.4 hereof, not less than all of the outstanding
Warrants may be redeemed, at the option of the Company, at any time after they become exercisable
and prior to their expiration, at the office of the Warrant Agent, upon the notice referred to in
Section 6.2, at the price of $.01 per Warrant (“Redemption Price”), provided that the last
sales price of the Common Stock has been at least $8.50 per share, on each of twenty (20) trading
days within any thirty (30) trading day period ending on the third business day prior to the date
on which notice of redemption is given; and provided further that the Company may not exercise the right to
redeem the Warrants pursuant to this Section 6 unless a registration
statement meeting the requirements of Rule 427 under the Act is
effective during the entirety of the Redemption Period (as defined in
Section 6.2) covering the sale of the shares of common stock issuable
upon exercise of the Warrants. The provisions of this Section 6.1 may not be modified,
amended or deleted without the prior written consent of FBW. FBW is an intended third party
beneficiary of this Section 6.1.

     6.2 Date Fixed for, and
Notice of, Redemption. In the event the Company shall elect to
redeem all of the Warrants, the Company shall fix a date for the redemption. Notice of redemption
shall be mailed by first class mail, postage prepaid, by the Company not less than 30 days prior to
the date fixed for redemption (the “Redemption Period”) to the registered holders of the Warrants to be redeemed at their
last addresses as they shall appear on the registration books. Any notice mailed in the manner
herein provided shall be conclusively presumed to have been duly given whether or not the
registered holder received such notice.

     6.3 Exercise After Notice
of Redemption. The Warrants may be exercised in accordance
with Section 3 of this Agreement at any time after notice of redemption shall have been given by

the Company pursuant to Section 6.2 hereof and prior to the time and date fixed for redemption. On
and after the redemption date, the record holder of the Warrants shall have no further rights
except to receive, upon surrender of the Warrants, the Redemption Price.

     6.4 Outstanding Warrants
Only. The Company understands that the redemption rights
provided for by this Section 6 apply only to outstanding Warrants. To the extent a person holds
rights to purchase Warrants, such purchase rights shall not be extinguished by redemption. However,
once such purchase rights are exercised, the Company may redeem the Warrants issued upon such
exercise provided that the criteria for redemption is met. The provisions of this Section 6.4 may
not be modified, amended or deleted without the prior written consent of FBW.

     7. Other Provisions
 Relating to Rights of Holders of Warrants.

     7.1 No Rights as
Stockholder. A Warrant does not entitle the registered holder thereof
to any of the rights of a stockholder of the Company, including, without limitation, the right to
receive dividends, or other distributions, exercise any preemptive rights to vote or to consent or
to receive notice as stockholders in respect of the meetings of stockholders or the election of
directors of the Company or any other matter.

     7.2 Lost, Stolen,
Mutilated, or Destroyed Warrants. If any Warrant is lost, stolen,
mutilated, or destroyed, the Company and the Warrant Agent may on such terms as to indemnity or
otherwise as they may in their discretion impose (which shall, in the case of a mutilated Warrant,
include the surrender thereof), issue a new Warrant of like denomination, tenor, and date as the
Warrant so lost, stolen, mutilated, or destroyed. Any such new Warrant shall constitute a
substitute contractual obligation of the Company, whether or not the allegedly lost, stolen,
mutilated, or destroyed Warrant shall be at any time enforceable by anyone.

     7.3 Reservation of
 Common Stock. The Company shall at all times reserve and keep
available a number of its authorized but unissued shares of Common Stock that will be sufficient to
permit the exercise in full of all outstanding Warrants issued pursuant to this Agreement.

     7.4 Registration of
Common Stock. The Company agrees that prior to the commencement of
the Exercise Period, it shall file with the Securities and Exchange Commission a post-effective
amendment to the Registration Statement, or a new registration statement, for the registration,
under the Act, of, and it shall take such

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action as is necessary to qualify for sale, in those
states in which the Warrants were
initially offered by the Company, the Common Stock issuable upon exercise of the Warrants. In
either case, the Company will use its best efforts to cause the same to become effective and to
maintain the effectiveness of such registration statement until the expiration of the Warrants in
accordance with the provisions of this Agreement (except in connection with a going private
transaction). Notwithstanding the foregoing, the failure or inability of the
Company to cause to become effective or to maintain the effectiveness
of such registration statement shall not in any way prevent the
expiration of the Warrants as provided in Section 3.2 of this
Agreement. The provisions of this Section 7.4 may not be modified, amended or deleted without
the prior written consent of FBW.

     8. Concerning the
 Warrant Agent and Other Matters.

     8.1 Payment of Taxes.
 The Company will from time to time promptly pay all taxes and
charges that may be imposed upon the Company or the Warrant Agent in respect of the issuance or
delivery of shares of Common Stock upon the exercise of Warrants, but the Company shall not be
obligated to pay any transfer taxes in respect of the Warrants or such shares.

     8.2 Resignation,
Consolidation, or Merger of Warrant Agent.

     8.2.1 Appointment of
 Successor Warrant Agent. The Warrant Agent, or any successor to
it hereafter appointed, may resign its duties and be discharged from all further duties and
liabilities hereunder after giving sixty (60) days’ notice in writing to the Company. If the office
of the Warrant Agent becomes vacant by resignation or incapacity to act or otherwise, the Company
shall appoint in writing a successor Warrant Agent in place of the Warrant Agent. If the Company
shall fail to make such appointment within a period of 30 days after it has been notified in
writing of such resignation or incapacity by the Warrant Agent or by the holder of the Warrant (who
shall, with such notice, submit his Warrant for inspection by the Company), then the holder of any
Warrant may apply to the Supreme Court of the State of New York for the County of New York for the
appointment of a successor Warrant Agent at the Company’s cost. Any successor Warrant Agent,
whether appointed by the Company or by such court, shall be a corporation organized and existing
under the laws of the State of New York, in good standing and having its principal office in the
Borough of Manhattan, City and State of New York, and authorized under such laws to exercise
corporate trust powers and be subject to supervision or examination by federal or state authority.
After appointment, any successor Warrant Agent shall be vested with all the authority, powers,
rights, immunities, duties, and obligations of its predecessor Warrant Agent with like effect as if
originally named as Warrant Agent hereunder, without any further act or deed; but if for any reason
it becomes necessary or appropriate, the predecessor Warrant Agent shall execute and deliver, at
the expense of the Company, an instrument transferring to such successor Warrant Agent all the
authority, powers, and rights of such predecessor Warrant Agent hereunder; and upon request of any
successor Warrant Agent the Company shall make, execute, acknowledge, and deliver any and all
instruments in writing for more fully and effectually vesting in and confirming to such successor
Warrant Agent all such authority, powers, rights, immunities, duties, and obligations.

     8.2.2 Notice of Successor
Warrant Agent. In the event a successor Warrant Agent shall
be appointed, the Company shall give notice thereof to the predecessor Warrant Agent and the
transfer agent for the Common Stock not later than the effective date of any such appointment.

     8.2.3 Merger or
Consolidation of Warrant Agent. Any corporation into which the Warrant
Agent may be merged or with which it may be consolidated or any corporation resulting from any
merger or consolidation to which the Warrant Agent shall be a party shall be the successor Warrant
Agent under this Agreement without any further act.

     8.3 Fees and Expenses
of Warrant Agent.

     8.3.1 Remuneration.
The Company agrees to pay the Warrant Agent reasonable
remuneration for its services as such Warrant Agent hereunder and will reimburse the Warrant Agent
upon demand for all expenditures that the Warrant Agent may reasonably incur in the execution of
its duties hereunder.

     8.3.2 Further
Assurances. The Company agrees to perform, execute, acknowledge, and
deliver or cause to be performed, executed, acknowledged, and delivered all such further and other
acts, instruments, and assurances as may reasonably be required by the Warrant Agent for the
carrying out or performing of the provisions of this Agreement.

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     8.4 Liability of Warrant
 Agent.

     8.4.1 Reliance on Company
Statement. Whenever in the performance of its duties under
this Warrant Agreement, the Warrant Agent shall deem it necessary or desirable that any fact or
matter be proved or established by the Company prior to taking or suffering any action hereunder,
such fact or matter (unless other evidence in respect thereof be herein specifically prescribed)
may be deemed to be conclusively proved and established by a statement signed by the Chief
Executive Officer, President or Chairman of the Board of the Company and delivered to the Warrant
Agent. The Warrant Agent may rely upon such statement for any action taken or suffered in good
faith by it pursuant to the provisions of this Agreement.

     8.4.2 Indemnity. The
 Warrant Agent shall be liable hereunder only for its own
negligence, willful misconduct or bad faith. The Company agrees to indemnify the Warrant Agent and
save it harmless against any and all liabilities, including judgments, costs and reasonable counsel
fees, for anything done or omitted by the Warrant Agent in the execution of this Agreement except
as a result of the Warrant Agent’s negligence, willful misconduct, or bad faith.

     8.4.3 Exclusions. The
Warrant Agent shall have no responsibility with respect to the
validity of this Agreement or with respect to the validity or execution of any Warrant (except its
countersignature thereof); nor shall it be responsible for any breach by the Company of any
covenant or condition contained in this Agreement or in any Warrant; nor shall it be responsible to
make any adjustments required under the provisions of Section 4 hereof or be responsible for the
manner, method, or amount of any such adjustment or the ascertaining of the existence of facts that
would require any such adjustment; nor shall it by any act hereunder be deemed to make any
representation or warranty as to the authorization or reservation of any shares of Common Stock to
be issued pursuant to this Agreement or any Warrant or as to whether any shares of Common Stock
will when issued be valid and fully paid and nonassessable.

     8.5 Acceptance of Agency. The Warrant Agent hereby accepts the agency established by
this Agreement and agrees to perform the same upon the terms and conditions herein set forth and
among other things, shall account promptly to the Company with respect to Warrants exercised and
concurrently account for, and pay to the Company, all moneys received by the Warrant Agent for the
purchase of shares of the Company’s Common Stock through the exercise of Warrants.

     9. Miscellaneous
 Provisions.

     9.1 Successors.
 All the covenants and provisions of this Agreement by or for the
benefit of the Company or the Warrant Agent shall bind and inure to the benefit of their respective
successors and assigns.

     9.2 Notices.
Any notice, statement or demand authorized by this Warrant Agreement to
be given or made by the Warrant Agent or by the holder of any Warrant to or on the Company shall be
sufficiently given when so delivered if by hand or overnight delivery or if sent by certified mail
or private courier service within five days after deposit of such notice, postage prepaid,
addressed (until another address is filed in writing by the Company with the Warrant Agent), as
follows:

China Healthcare Acquisition Corp.

1233 Encino Drive

Pasadena, California 91108

Attn: President

     Any notice, statement or
 demand authorized by this Agreement to be given or made by the holder
of any Warrant or by the Company to or on the Warrant Agent shall be sufficiently given when so
delivered if by hand or overnight delivery or if sent by certified mail or private courier service
within five days after deposit of such notice, postage prepaid, addressed (until another address is
filed in writing by the Warrant Agent with the Company), as follows:

7

 

American Stock Transfer & Trust
Company

59 Maiden Lane

New York, NY 10038

Attn: Herbert J. Lemmer, General Counsel

with a copy in each case to:

Venable LLP

8010 Towers Crescent Drive

Suite 300

Vienna, Virginia 22182

Attn: Elizabeth R. Hughes, Esq.

and:

Ferris, Baker Watts, Incorporated

100 Light Street

Baltimore, Maryland 21202

Attn: Richard K. Prins

and:

Gersten Savage, LLP

600 Lexington Avenue

New York, New York 10022

Attn: Arthur Marcus, Esq.

     9.3 Applicable law.

 The validity, interpretation, and performance of this Agreement
and of the Warrants shall be governed in all respects by the laws of the State of New York, without
giving effect to conflict of laws. The Company hereby agrees that any action, proceeding or claim
against it arising out of or relating in any way to this Agreement shall be brought and enforced in
the courts of the State of New York or the United States District Court for the Southern District
of New York, and irrevocably submits to such jurisdiction, which jurisdiction shall be exclusive.
The Company hereby waives any objection to such exclusive jurisdiction and that such courts
represent an inconvenience forum. Any such process or summons to be served upon the Company may be
served by transmitting a copy thereof by registered or certified mail, return receipt requested,
postage prepaid, addressed to it at the address set forth in Section 9.2 hereof. Such mailing shall
be deemed personal service and shall be legal and binding upon the Company in any action,
proceeding or claim.

     9.4 Persons Having
Rights under this Agreement. Nothing in this Agreement expressed
and nothing that may be inferred from any of the provisions hereof is intended, or shall be
construed, to confer upon, or give to, any person or corporation other than the parties hereto and
the registered holders of the Warrants and, for the purposes of Sections 2.5, 6.1, 6.4, 7.4 and 9.2
hereof, FBW, any right, remedy, or claim under or by reason of this Warrant Agreement or of any
covenant, condition, stipulation, promise, or agreement hereof. FBW shall be deemed to be a
third-party beneficiary of this Agreement with respect to Sections 2.5, 6.1, 6.4, 7.4, 7.5 and 9.2
hereof. All covenants, conditions, stipulations, promises, and agreements contained in this Warrant
Agreement shall be for the and exclusive benefit of the parties hereto (and FBW with respect to the
Sections 2.5, 6.1, 6.4, 7.4, 7.5 and 9.2 hereof) and their successors and assigns and of the
registered holders of the Warrants.

     9.5 Examination of the
Warrant Agreement. A copy of this Agreement shall be available
at all reasonable times at the office of the Warrant Agent in the Borough of Manhattan, City and
State of New York, for inspection by the registered holder of any Warrant. The Warrant Agent may
require any such holder to submit his Warrant for inspection by it.

     9.6 Counterparts.
This Agreement may be executed in any number of counterparts and
each of such counterparts shall for all purposes be deemed to be an original, and all such
counterparts shall together constitute but one and the same instrument.

8

 

     9.7 Effect of Headings.
 The Section headings herein are for convenience only and are
not part of this Warrant Agreement and shall not affect the interpretation thereof.

[Remainder of this page intentionally left
 blank; signature page follows.]

9

 

     IN WITNESS WHEREOF, this
 Agreement has been duly executed by the parties hereto as of the day
and year first above written.

	 	 	 	 	 
	 	 	Attest:

	 	 	
CHINA HEALTHCARE ACQUISITION CORP.
	 
	 	 	 	 
	 

	 	By:	 	 
	 

	 	 	 	 
	 	 	Name: Alwin Tan
	 	 	Title: President and Chief Executive Officer
	 
	 	 	 	 
	 	 	Attest:

AMERICAN STOCK TRANSFER & TRUST

COMPANY
	 

	 	By:	 	 
	 

	 	 	 	 
	 

	 	 	 	Name: [           
         ]
	 

	 	 	 	Title: [           
         ]

10

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