Early Warning Press Release Issued Pursuant To National Instrument 62-103 Acquisition Of Shares Of Chinapintza Mining Corp. (Formerly Black Birch Capital Acquisition II Corp.)

June 20, 2013 – Toronto, Ontario: GS International Mining Co., Ltd. (“GSI”). This press release is being disseminated as required by National Instrument 62-103 The Early Warning System and Related Take Over Bids and Insider Reporting Issues in connection with the filing of an early warning report (the “Early Warning Report”) by Chinapintza Mining Corp. (the “Company”) regarding the acquisition of securities of the Company by GSI in exchange for securities of Guangshou Ecuador Minerals Ltd., a wholly-owned subsidiary of GSI (the “Transaction”).

Pursuant to the Transaction, GSI directly acquired as an issuance from the treasury of the Company a total of 33,250,000 common shares of the Company at a deemed price of $0.10 per share, representing approximately 75.5% of the issued and outstanding voting securities of the Company.

Accordingly, GSI currently owns a total of 33,250,000 common shares (the “Securities”) of the Company, representing approximately 75.5% of the issued and outstanding voting securities of the Company.

The Securities were acquired for investment purposes, and the Company may increase or decrease its beneficial ownership or control depending on market or other conditions. The Securities are subject to escrow pursuant to the policies of the TSX Venture Exchange, and the terms of the escrow and more fully described in the Filing Statement of the Company (formerly Black Birch Capital Acquisition II Corp.) dated May 29, 2013, which is filed on SEDAR and available under the Company’s profile at www.SEDAR.com.

A copy of the Early Warning Report may be found on www.SEDAR.com.

For further information please contact:

Bill Mitoulas
Chief Executive Officer & President
GS International Mining Co., Ltd. Telephone: (416) 479-9547
E-mail: billm@venturenorthcapital.com

Cautionary Note

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
Not for distribution to U.S. Newswire Services or for dissemination in the United States. Any failure to comply with this restriction may constitute a violation of U.S. securities laws.