NEW YORK, NY–( EMWNews – April 7, 2008) – Greenstone Holdings, Inc. (PINKSHEETS: GSHN)

announced today that the Company has introduced a new product MagneLine®

StairSaf-T™ which is an innovative method to utilize specially designed

Polymer Cement Mortar to protect metal stairs such as fire escape and

ladders on high-rise buildings and pedestrian crossing bridges, from rust,

corrosion, and also to add traction making it harder to slip under slippery

conditions.

“There are thousands of fire escape stairs and pedestrian bridges in our

major cities which are not protected from the weather and StairSaf-T™

will make them last longer and be safer for the travelers,” said Sal Miwa,

CEO of Greenstone.

MagneLine is distributed exclusively in the United States by Greenstone for

Magne Corporation in Fukuoka, Japan. See an example at

http://www.egreenstone.com/documents/StairSaf-Tapplicationexample.pdf.

About Greenstone Holdings, Inc.

(www.egreenstone.com) Greenstone® 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 a “green” solution to protect wood based building

materials such as lumber, logs, plywood, drywall, railroad ties, fencing,

and utility poles from destructive environmental elements. It also offers

added fire retardancy to the material it is applied to. The $25 billion

water damage market is just one example of the perfect niche for

GreenShield. Greenstone also exclusively distributes Green-Dri™, a

revolutionary biological dry kiln for drying wood, Permeate™, a very

unique anti-corrosion sealer paint for metal, concrete, and other

construction materials, MagneLine®, a very strong polymer cement mortar

used to reinforce and/or repair metal and concrete structures such as

bridges and highways, and Crystal-Guard™, an innovative chemical to make

asbestos harmless and recyclable.

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.