SOURCE: Greenstone Holdings, Inc.

October 17, 2007 09:45 ET

D&D Corp. of Japan Appoints Greenstone Holdings, Inc. as Its Exclusive US Agent

NEW YORK, NY--(Marketwire - October 17, 2007) - Greenstone Holdings, Inc. (PINKSHEETS: GSHN) announced today that the Company recently signed a memorandum of understanding ("MOU") with D & D Corporation ("D&D") headquartered in Yokkaichi City in Japan. D&D has agreed to supply its proprietary chemical products line, "Permeate™" and technical expertise on an exclusive basis to the Company. This MOU also states that it is the intention of both parties to produce Permeate™ in the United States. Permeate™ is a specially designed sealer which comes in various formulas. Its application is designed to protect materials from environmental condition such as corrosion, rust, and dirt. Permeate™ can be applied to surfaces of coated metals, concrete, tiles, and rock used on buildings, bridges, road ways, tunnels, and aircraft.

Sal Miwa, Chief Executive Officer of the Company said, "Permeate is a proven product line. It has been used in Japan for over 5 years and it really works. This agreement will give us an opportunity to expand our business into the civil engineering and other markets."

About Greenstone Holdings, Inc.

Greenstone Holdings, Inc. (, through its operating subsidiaries, is in the business of providing a variety of unique chemical technologies that are primarily used in the building and construction industry. The Company's first brand name product, GreenShield™, offers building materials such as plywood, drywall, and lumber protection from the environment. It also offers added fire retardancy to the material it is applied to. GreenShield covers a wide range of applications such as wooden building material, fencing, railroad tie, and utility pole. The $25 billion water damage market is one example of many which GreenShield can be useful in.

Forward-Looking Statements:

Safe Harbor statement under the Private Securities Litigation Reform Act of 1995: Except for historical information contained herein, the matters discussed in this press release are forward-looking statements that involve risks and uncertainties, including but not limited to economic, competitive, governmental and technological factors effecting the Company's operations, markets, products and prices and other factors discussed in the Company's various filings with the Securities and Exchange Commission.

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