Tht Heat Transfer Technology

Tht Heat Transfer Technology – Beijing Juyuan Hanyang Heat Exchange Equipment Co. Ltd. Share Transfer Agreement (April 1st, 2013)

Beijing Juyuan Hanyang Heat Exchange Equipment Co. Ltd. (the "Joint Venture") is a Sino-foreign joint venture between Siping City Juyuan Hanyang Plate Heat Exchanger Co. Ltd. (75% ownership) and Hanyang International GmbH (25% ownership) with a fully paid-in registered capital of RMB 10 million.

Tht Heat Transfer Technology – Option Agreement (February 3rd, 2011)

OPTION AGREEMENT (this Agreement), dated as of June 30, 2009, by and between Wisetop International Holdings Limited, a company incorporated under the laws of the British Virgin Islands (the Grantor) and ____________, an individual citizen of the Peoples Republic of China (the Optionee) (each of the foregoing, a Party and together, the Parties).

Tht Heat Transfer Technology – Closing Escrow Agreement (November 3rd, 2010)

This Closing Escrow Agreement, dated as of November 2, 2010 (this Agreement), is entered into by and among THT Heat Transfer Technology, Inc., a Nevada corporation (the "Company"), Infinity I-China Fund (Cayman) L.P. (the "Investment Agent") and Escrow, LLC, with its principal offices located at 360 Main St., Washington, VA 22747 (the Escrow Agent). The Investment Agent and the Company are sometimes each referred to herein as an "Escrowing Party" and collectively, the "Escrowing Parties."

Tht Heat Transfer Technology – Securities Purchase Agreement (November 3rd, 2010)

TERMS NOT DEFINED HEREIN SHALL HAVE THE MEANINGS ASCRIBED TO THEM IN THE SECURITIES PURCHASE AGREEMENT TO WHICH THIS SCHEDULE IS ATTACHED.

Tht Heat Transfer Technology – Right of Co-Sale Agreement (November 3rd, 2010)

THIS RIGHT OF CO-SALE AGREEMENT (the Agreement) is made as of the 2nd day of November, 2010 by and among THT Heat Transfer Technology, Inc., a Nevada corporation (the Company); the investors listed on Schedule A hereto (the Investors); and Guohong Zhao, Xiaoqiu Yu, and Xiaomei Fang (the Key Holders).

Tht Heat Transfer Technology – Make Good Escrow Agreement (November 3rd, 2010)

This Make Good Escrow Agreement (the "Make Good Agreement"), dated effective as of November 2, 2010, is entered into by and among the following:

Tht Heat Transfer Technology – Lock-Up Agreement (November 3rd, 2010)

Infinity I-China Fund (Cayman) L.P. Lead Investor and As Representative of the Several Investors Unit 3501 Lippo Centre, Tower 1 89 Queensway Road, Admiralty Hong Kong, China

Tht Heat Transfer Technology – Registration Rights Agreement (November 3rd, 2010)

This Registration Rights Agreement (this Agreement) is dated as of November 2, 2010, by and among THT Heat Transfer Technology, Inc., a Nevada corporation (the Company), and the investors signatory hereto (each an Investor and collectively, the Investors). This Agreement is made in connection with the Securities Purchase Agreement, dated as of the date hereof, among the Company and the Investors (the Purchase Agreement).

Tht Heat Transfer Technology – Agreement and Plan of Merger (December 4th, 2009)

This AGREEMENT AND PLAN OF MERGER (hereinafter called this Agreement), dated as of November 24, 2009, is entered into between BTHC VIII, Inc., a Delaware corporation (the Company) and THT Heat Transfer Technology, Inc., a Nevada corporation and a wholly owned subsidiary of the Company (THT). The Company and THT are sometimes together referred to herein as the Constituent Entities.

Tht Heat Transfer Technology – BYLAWS OF THT HEAT TRANSFER TECHNOLOGY, INC. (The Corporation) Adopted on September 16, 2009 _______________________________________________________ ARTICLE I OFFICES (December 4th, 2009)

Tht Heat Transfer Technology – Tht Heat Transfer Technology, Inc. Independent Director Agreement (September 28th, 2009)

THIS AGREEMENT (The Agreement) is made as of the 25th day of September, 2009 and is by and between BTHC VIII, Inc., a Delaware corporation (hereinafter referred to as the Company), and To Tsang (hereinafter referred to as the Director).

Tht Heat Transfer Technology – Indemnification Agreement (September 28th, 2009)

This Indemnification Agreement (this Agreement), dated as of the 25th day of September 2009 is made by and between THT HEAT TRANSFER TECHNOLOGY, INC., a Nevada corporation (the Company), and Wenquan Tao, an independent director of the Company (the Indemnitee).

Tht Heat Transfer Technology – Indemnification Agreement (September 28th, 2009)

This Indemnification Agreement (this Agreement), dated as of the 25th day of September 2009 is made by and between THT HEAT TRANSFER TECHNOLOGY, INC., a Nevada corporation (the Company), and William Haus, an independent director of the Company (the Indemnitee).

Tht Heat Transfer Technology – Indemnification Agreement (September 28th, 2009)

This Indemnification Agreement (this Agreement), dated as of the 25th day of September 2009 is made by and between THT HEAT TRANSFER TECHNOLOGY, INC., a Nevada corporation (the Company), and To Tsang, an independent director of the Company (the Indemnitee).

Tht Heat Transfer Technology – Tht Heat Transfer Technology, Inc. Independent Director Agreement (September 28th, 2009)

THIS AGREEMENT (The Agreement) is made as of the 25th day of September, 2009 and is by and between BTHC VIII, Inc., a Delaware corporation (hereinafter referred to as the Company), and William Haus (hereinafter referred to as the Director).

Tht Heat Transfer Technology – Tht Heat Transfer Technology, Inc. Independent Director Agreement (September 28th, 2009)

THIS AGREEMENT (The Agreement) is made as of the 25th day of September, 2009 and is by and between BTHC VIII, Inc., a Delaware corporation (hereinafter referred to as the Company), and Wenquan Tao (hereinafter referred to as the Director).

Tht Heat Transfer Technology – Joint Filing Agreement (July 22nd, 2009)

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, each of the undersigned hereby agrees to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the common stock of BTHC VIII, Inc., and that this Agreement be included as an Exhibit to such joint filing.

Tht Heat Transfer Technology – Maximum Amount Mortgage Agreement (July 7th, 2009)

Tht Heat Transfer Technology – Share Exchange Agreement (July 7th, 2009)

This SHARE EXCHANGE AGREEMENT (this Agreement), dated as of June 30, 2009, is by and among BTHC VIII, Inc., a Delaware corporation (BTHC), Megaway International Holdings Limited, a British Virgin Islands company (Megaway), and the sole shareholder of Megaway, Wisetop International Holdings Limited, a British Virgin Islands Company (the Shareholder). Each of the parties to this Agreement is individually referred to herein as a Party and collectively, as the Parties. Capitalized terms used herein that are not otherwise defined herein shall have the meanings ascribed to them in Annex A hereto.

Tht Heat Transfer Technology – Cancellation Agreement (July 7th, 2009)

CANCELLATION AGREEMENT, dated June 30, 2009 (this "Agreement"), by and among, BTHC VIII, Inc., a Delaware corporation (the "Company"), and Mr. Gerard Pascale (the "Cancelling Party").

Tht Heat Transfer Technology – Loan Agreement (July 7th, 2009)

Tht Heat Transfer Technology – Loan Agreement (July 7th, 2009)

Tht Heat Transfer Technology – Non-Disclosure Agreement (July 7th, 2009)

As the position of Party B is related to important trade secret of Party A, the parties enter into the agreement hereby after consultations as follows:

Tht Heat Transfer Technology – Labor Contract (July 7th, 2009)

According to the provisions of the Labor Law of the People's Republic of China, the Parties enter into this contract with the following terms and conditions.

Tht Heat Transfer Technology – Commission Loan Agreement (July 7th, 2009)

Party B and Party C signed and executed Commission Loan Agreement (Ref. 2008002). Upon the request of Party A, Party B entrusts the Party C with its own funds to make the said funds available to the Party A on behalf of the Party B with the terms and conditions of this Agreement.

Tht Heat Transfer Technology – Supplementary Agreement of Labor Contract (July 7th, 2009)

Party B had already terminated labor contract with the former employer and does not have any disputes or labor dispute. Party B should assume the responsibility if causing a loss to the former employer.

Tht Heat Transfer Technology – Labor Contract (July 7th, 2009)

According to the provisions of the Labor Law and Labor Contract Law of the People's Republic of China and Labor Contract Regulation of Jilin Province as well as relevant laws and regulations, the Parties enter into this contract on the base of equality, voluntaries and consensus and accordingly comply with the following terms and conditions.

Tht Heat Transfer Technology – Share Exchange Agreement (February 13th, 2009)

This SHARE EXCHANGE AGREEMENT (this "Agreement"), dated as of February 12, 2009, is by and among BTHC VIII, Inc., a Delaware corporation, (the "Parent"), Sino- America Ventures, Inc., a Delaware corporation (the "Company"), and the Shareholders of the Company identified on Annex A hereto (each, a "Shareholder", and together, the "Shareholders"). Each of the parties to this Agreement is individually referred to herein as a "Party" and collectively, as the "Parties."

Tht Heat Transfer Technology – Contract (September 21st, 2006)

EXHIBIT 4.1 CUSIP BTHC VIII, INC. INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE SEE REVERSE FOR COMMON STOCK CERTAIN DEFINITIONS SPECIMEN This certifies that is the owner of FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, $0.001 PAR VALUE, OF BTHC VIII, INC. (hereinafter called the "Corporation"), transferable on the books of the Corporation by the holder hereof in person or by duly authorized attorney, upon surrender of the Certificate properly endorsed. This certificate and the shares represented hereby are issued and shall be held subject to all the provisions of the Certificate of Incorporation and the Bylaws of the Corporation, as amended (copies