FYI..

E-mail response from a company that has just apparently fired Hawk..this is the second stock that I own that has done so..China 3C group has done the same..perhaps Hawk got them to a certain point and they are moving forward..or Hawk's performance was lacking in both instances and these companies have moved on accordingly..you be the judge based on their performance with PTSC..I can't say definitively either way - as our stock price is a combination of many factors..however, it does raise eyebrows when two other stocks have chosen to go elsewhere for their IR services..

_______________________

We are hiring another IR firm and will make that announcement soon.
Our stock now is cleared for OTCBB trading and hope it will resume very soon.

Timothy D. Pham
CAvico Corp.
17011 Beach Blvd., Suite 1230
Huntington Beach, CA 92647
Tel: 714-843-5456; Fax: 714-843-5451
Efax: 1-270-897-0243
www.cavicocorp.com

-------- Original Message --------
Subject: Hawk Associates
From:

Date: Fri, March 28, 2008 10:21 am
To: <[email protected]>

Per an e-mail from Hawk Associates, you are no longer using their services..can you please confirm.

Also, are you using another PR firm? If so, can you please advise as to whom that may be?

Are you any closer to listing on the OB board?

Please advise.

Interested investor.