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NETT BlueCAT 300™ Closed-Loop Catalyst System

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Norman G. Clark Announces:

Nett Technologies Inc. receives CARB
Verification for its BlueCAT 300™ Closed-Loop Catalyst System

Nett Technologies Inc. has received verification from the
California Air Resources Board (CARB) for its proprietary advanced BlueCAT 300™
Closed-Loop Catalyst System The California ARB has verified the Nett BlueCAT
300™ system for its mobile sources LSI-2 measure. The verification covers
specific LSI (large spark ignited [over 25 hp]) engines, model years 1990
through 2001 used in unregulated off-road applications operating on propane
(LPG) fuel. Model years 2001 through 2004 are also covered for non-complying
phase-in engines. The BlueCAT 300™ Closed-Loop Catalyst System employs a high
performance 3-way catalytic converter and a dynamic digital air-fuel ratio
controller to reduce emissions of uncontrolled engines to 1.0g/hp-hr of NOx +
HC, consistent with a Level 3a classification. Specific engine criteria for
which the BlueCAT 300™ system has been approved may be found in Executive Order
G-07-017 which has been posted on the CARB website
(http://www.arb.ca.gov/msprog/offroad/orspark/verdev.htm).

CARB's off-road LSI measures are primarily targeted towards
forklifts but also include other LSI engine powered equipment. Estimates of the
number of uncontrolled LSI engines in California to be retrofitted range from
10,000 to 20,000. The engines used in the majority of these applications are
similar to or derived from early 1980s automobile engines. NOx (oxides of
nitrogen) and HC (hydrocarbons) emissions from these engines are considerably
higher than that of today's automobiles. It is these NOx and HC emissions that
contribute most strongly to the formation of smog, often visible in large urban
centers. Smog is also a significant health concern as it can inflame breathing
passages, and can cause eye and nose irritation, shortness of breath, wheezing,
and coughing. The reduction in NOx and HC emissions from LSI engines may
improve working conditions inside buildings as well as reducing smog formation
in the environment.

3-Way Catalytic converters, such as used in Nett's BlueCAT
300™ system, work by converting harmful NOx, HC and CO (carbon monoxide)
emissions into CO2 (carbon dioxide) and water. For a 3-way catalytic converter
to achieve maximum reductions, the relative amounts of NOx, HC and CO emissions
must balance. These emissions are balanced when the engine operates at a
specific air/fuel mixture called the stoichiometric air-fuel ratio. Modern
automobiles use fuel injection and on-board computers to keep the engine at the
stoichiometric ratio, whereas off-road LSI engines in use today are not as
sophisticated. Nett's BlueCAT 300™ system uses a digital air-fuel ratio
controller which incorporates an oxygen sensor, solenoid and the electronic
controller to maintain off-road LSI engines at stoichiometric. When paired with
the high performance catalytic converter used in the BlueCAT 300™ system,
emissions reductions are maximized.

BlueCAT 300™ catalytic converters are most often configured
as a catalytic muffler which is an exact-fit replacement for the original
equipment's muffler. Due to the limited space in the engine compartment of most
LSI powered equipment, placing the catalytic converter inside the muffler is often
the only solution. Since the mufflers are exact replacements, installation is
simple and convenient. Nett has over 5,000 muffler designs for virtually any
type or model of equipment. The BlueCAT 300™ air-fuel ratio controller features
a built-in diagnostic function which allows constant visual monitoring of the
engine's fuel system by the operator and/or service technician. Such innovative
technology eliminates the costly requirement for additional calibration
monitors.

For more information contact NORMAN.G.
CLARK on (03) 9450 8200 or visit our
website at www.ngclark.com.au