Document:

Filed by Automated Filing Services Inc. (604) 609-0244 - Solar Enertech Corporation - Exhibit 10.21

BUSINESS CONSULTANT AGREEMENT 

THIS AGREEMENT dated May 1, 2006, is made:

BETWEEN:

SOLAR ENERTECH CORP., a company
incorporated under 
the laws of the State of Nevada, having an address of
1600 
Adams Drive, Menlo Park, California, USA, 94025 

(referred to as the “Company") 

AND: 

BOUNDARY POINT INVESTOR RELATIONS,
INC., 
having an address of 1530 Gulf Road, Point Roberts,

Washington, USA, 98281

(referred to as “Consultant") 

	1. 	Consultation Services
  

The Company hereby engages the Consultant to perform the
following services in accordance with the terms and conditions set forth in this
Agreement: The Consultant will consult with the officers and employees of the
Company concerning matters relating to marketing and investor relation
services.

	2. 	Term of Agreement.

The term of this Agreement will commence May 1, 2006 and will
continue until April 30, 2008. Either party may terminate this Agreement by
giving the other party ninety (90) days written notice delivered by registered
mail or confirmed email.

	3. 	Place Where Services Will Be
      Rendered 

The Consultant will perform most services in accordance with
this Agreement at 1530 Gulf Road, Point Roberts, Washington or such other
address that is acceptable to both parties. In addition, the Consultant will
perform services on the telephone and at such other places as designated by the
Company to perform these services in accordance with this Agreement.

	4. 	Payment to Consultant
  

The Consultant will be paid in advance on the 1st day of each
month at the rate of Ten Thousand Dollars in US funds (US$10,000.00) per month
for work performed in accordance with this Agreement; Provided that the
Consultant issues an invoice to the Company on or before the first day of each
month of the term. The Company will reimburse the Consultant for all
disbursements, including travel, accommodation, printing, postage, long distance
telephone charges and other related costs, reasonably incurred by the Consultant
for the purpose of the provision of the Consultant’s services to the Company
within 10 days of having received written receipts in respect of this
disbursements, providing that any such disbursement exceeding $500.00 must have
been approved by the Company in advance of its having been incurred; and
providing further that the disbursements must be submitted once a month and will

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only be reimbursed once a month. The Consultant has the right
to ask the Company for an advance payment, if appropriate, to pay for certain
disbursements that have been pre-approved by the Company.

	5. 	Independent Contractor
  

Both the Company and the Consultant agree that the Consultant
will at all times act as an independent contractor in the performance of its
duties under this Contract. Accordingly, the Consultant shall be solely
responsible for payment of all taxes including Federal, State and local taxes
arising out of the Consultant's activities in accordance with this Agreement,
including by way of illustration but not limitation, Federal and State income
tax, business tax, and any other taxes or business license fees as may be
required to be paid.

	6. 	Confidential Information and
      Non-Competition 

The Consultant agrees that any information received by the
Consultant or Bradford J. Long during the performance of the Consultant's
obligations pursuant to this Agreement or otherwise, regarding the business,
financial, technological or other any other affairs of the Company or its
personnel will be maintained by the Consultant and Bradford J. Long as strictly
confidential and will not be revealed by the Consultant or Bradford J. Long to
any other persons, firms, organizations or other entities whatsoever. This
covenant shall survive the termination of this Agreement. 

The Consultant agrees that during the term of this Agreement
and thereafter, it and Bradford J. Long will not compete or attempt to compete
with the business or technology of the Company or in any other respects
whatsoever. 

	7. 	Employment of Others
  

The Company may from time to time request that the Consultant
arrange for the services of others. All costs to the Consultant for those
services will be paid by the Company but in no event shall the Consultant engage
the services of others without first obtaining the written authorization of the
Company.

	8. 	Entire Agreement

Both the Company and the Consultant agree to the above Contract
which constitutes the entire agreement between the parties and supersedes all
previous expectations, understandings, communications, representations and
agreements, whether verbal or written between the parties with respect to the
subject matter hereof. 

	9 	Further Assurances

Each of the parties hereto hereby covenants and agrees to
execute such further and other documents and instruments and do such further and
other things as may be necessary to implement and carry out the intent of this
Agreement. 

	10. 	Notices 

All notices, requests, demands and other communications
hereunder will be in writing and will be deemed to have been duly given if
delivered by hand, facsimile, or mailed, postage prepaid, addressed to the
parties at their addresses first set forth above or to such other address as may
be given in writing by the Company or the Consultant and will be deemed to have
been received, if delivered, on the date of delivery and if mailed, then on the
fifth business day following the 

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posting thereof provided that if there will be, between the
time of mailing, and the actual receipt of the notice a mail strike, slowdown or
other labor dispute which might affect the delivery of the notice by the mails,
then the notice will only be effective if actually delivered. 

	11. 	Severability of Clauses
  

In the event that any provisions of this Agreement or any part
thereof is invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions will not in any way be affected or
impaired thereby. 

	12. 	Assignment 

This Agreement is not assignable by either of the parties
hereto. 

	13. 	Execution in Counterpart
  

This Agreement may be executed in counterpart, each of which
such counterpart, notwithstanding the date or dates upon which this Agreement is
executed and delivered by any of the parties, shall be deemed to be an original,
whether in originally executed or in facsimile form, and all of which will
constitute one and the same agreement, effective as of the reference date given
above. 

SOLAR ENERTECH CORP.

	“Leo Shi Young”	 
	Leo Shi Young, President 	 
	  	 
	  	 
	  	 
	BOUNDARY POINT INVESTOR RELATIONS, INC. 	 
	  	 
	  	 
	  	 
	  	 
	“Bradford J.
    Long”	 
	Bradford J. Long, President 	 

- 3 -Filed by Automated Filing Services Inc. (604) 609-0244 - Solar Enertech Corporation - Exhibit 10.24

PROMISSORY NOTE 

	$450,000.00 USD 	Date: Feb. 9, 2006

FOR VALUE RECEIVED, INFOTECH (SHANGHAI) NEW ENERTECH LTD.
(the “Promissor”) hereby promises to pay to INFOTECH ESSENTIALS, INC.,
or such other holder for the time hereof (the “Holder”), the principal
amount of Four Hundred and Fifty Thousand Dollars ($450,000.00) in the United
States currency (the “Principal Amount”) ON DEMAND. No interest is payable on
the outstanding principal. 

Subsequent to demand for payment, any arrears in payment of the
Principal Amount shall bear interest at the rate of ten percent (10%) per annum
calculated annually. Time shall be of the essence of this Note. Extension of
time for payment of all or any part of the amount owing hereunder at any time or
times, or failure of the Holder to enforce any of the rights or remedies
hereunder, shall not release the Promissor and shall not constitute a waiver of
the rights of the Holder to enforce such rights and remedies thereafter. 

Should suit be brought to recover on this Note, the Promissor
promises to pay reasonable attorney’s fees and court costs in addition to the
amount found to be due on this Note. 

IN WITNESS WHEREOF the Promissor has executed this Note
effective as of Feb. 9, 2006 although executed thereafter. 

INFOTECH (SHANGHAI) SOLAR TECHNOLOGIES LTD. 

	By: “ Shi Jian
    Yin"	 
	       Authorized SignatoryFiled by Automated Filing Services Inc. (604) 609-0244 - Solar  Enertech Corporation -  Exhibit 10.8

SETTLEMENT AGREEMENT

THIS AGREEMENT effective as of the 9th day of March,
2007 although executed thereafter. 

BETWEEN:

SOLAR ENERTECH CORP., a company having an office at 1600
Adams Drive, Menlo Park, California, USA, 94025

(the “Company”)

AND:

KNIGHT CAPITAL MARKETS, LLC, a company having an office
at 100 Manhattanville Road Purchase, NY 10577

(“Knight”)

WHEREAS:

	A. 	
      The Company and Knight agreed, pursuant to an Engagement
      Agreement between them (the “Agreement”) that Knight would represent the
      Company in various activities, including introducing the Company to
      persons who could provide financing to the Company;

	 	 
	B. 	
      The Company and Knight have been in disagreement (the
      “Disagreement”) as to whether or not Knight’s compensation for providing
      services under the Agreement would include fees for the initial
      US$6,000,000 in debt, equity and other financing that the Company secured
      for its solar business.

	 	 
	C. 	
      The Company and Knight have agreed to resolve the
      Disagreement by way of payment, by the Company, to Knight, of US$420,000
      as described in the Flow of Funds Memo attached hereto as Schedule
    “A”.

NOW THEREFORE let this Settlement Agreement witness that
the parties hereto have agreed as follows:

1. The Disagreement is hereby fully and finally settled by way
of payment, by the Company to Knight, in the amount of US$420,000 (the
“Settlement Payment”).

2. The Settlement Payment will be made on or before March 12,
2007.

3. The Settlement Payment represents full and final settlement
of all outstanding debts, liabilities and obligations of and between Knight and
the Company concerning services which Knight has provided to the Company prior
to the Company’s US$13.3 million financing it is presently undertaking.

2

IN WITNESS WHEREOF the parties have executed this
Agreement effective March 9, 2007

SOLAR ENERTECH CORP. 
by its authorized
signatory:

/s/ “Leo Shi Young”
Leo Shi Young

/s/ “Marcus Laun”

________________________________
KNIGHT CAPITAL MARKETS, LLC

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