Greentech Technology International Limited — Proxy Solicitation & Information Statement 2011

Apr 15, 2011

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VITAR INTERNATIONAL HOLDINGS LIMITED

威達國際控股有限公司

(Incorporated in Cayman Islands with limited liability)

(Stock Code: 195)

FORM OF PROXY

Proxy Form for use at the Second Extraordinary General Meeting (the ‘‘Second Meeting’’) to be held on 12 May 2011 (or any adjournment thereof)

I/We (Note 1)

of

being the registered holder(s) of (Note 2) share(s) of HK$0.005 each in the share capital of Vitar International Holdings Limited (the ‘‘Company’’) hereby appoint the Chairman of the Second Meeting or (Note 3) of

as my/our proxy to attend and vote for me/us and on my/our behalf at the Second Extraordinary General Meeting of the Company to be held at Room 2607, Greenfield Tower Concordia Plaza, 1 Science Museum Road, Tsimshatsui, Kowloon, Hong Kong on Thursday, 12 May 2011 at 11:30 a.m. (or any adjournment thereof) on the undermentioned resolution as indicated, and, if no such indication is given, as my/ our proxy thinks fit:

ORDINARY RESOLUTIONS

For (Note 4) Against (Note 4)

1. To approve, subject to the approval of the Registrar of Companies in the Cayman Islands, the change of the English name of the Company from ‘‘Vitar International Holdings Limited’’ to ‘‘Goodtop Tin International Holdings Limited’’ and the Chinese name of the Company from ‘‘威達國際控股有限公司’’ to ‘‘萬佳錫業國際 控股有限公司’’ (the ‘‘Proposed Change of Name’’) and authorise any of the directors of the Company to do all such acts and things and execute all documents or make such arrangements as he/she may, in his/her absolute discretion, consider necessary or expedient to effect the abovementioned change of the Company name.

Dated this day of 2011

Signed (Note 5):

Notes:

1. Full name(s) and address(s) to be inserted in BLOCK CAPITALS.

2. Please insert the number of shares registered in your name(s). If no number is inserted, this form will be deemed to relate to all the shares in the Company registered in your name(s).

3. If any proxy other than the Chairman of the Second Meeting is preferred, strike out ‘‘the Chairman of the Second Meeting or’’ and insert the name and address of the proxy desired in the space provided. Any alteration made to this form must be initialed by the person who signs it.

4. IMPORTANT: If you wish to vote for the resolution, tick the appropriate boxes marked ‘‘FOR’’. If you wish to vote against to the resolution, tick the appropriate boxes marked ‘‘AGAINST’’. Failure to complete the boxes will entitle your proxy to cast his vote at his discretion.

5. This proxy form must be signed by you or your attorney duly authorised in writing or, in the case of a corporation, must be executed either under its common seal or under the hand of an officer or attorney or other person duly authorised.

6. In the case of joint holders of a share, the vote of the senior who tenders a vote, whether in person or by proxy, shall be accepted to the exclusion of the votes of the other joint holder(s) and for this purpose seniority shall be determined by the order in which the names stand in the register of members in respect of the joint holding, the first named being the senior.

7. To be valid, this proxy form together with power of attorney (if any) or other authority (if any) under which it is signed or a notarially certified copy thereof must be deposited at the Company’s Share Registrar, Tricor Investor Services Limited at 26/F., Tesbury Centre, 28 Queen’s Road East, Wanchai, Hong Kong, not less than 48 hours before the time fixed for holding the meeting (or any adjournment thereof).

8. The proxy need not be a member of the Company but must attend the Second Meeting (or any adjournment thereof) in person to represent you. 9. Completion and return of this form will not preclude you from attending and voting at the Second Meeting (or any adjournment thereof) if you wish to do so.

9. The full text of the resolutions referred to above appears in the notice of the Second Meeting dated 18 April 2011.