Re Agreement

Stanelco PLC
11 April 2005

11 April 2005

                   Stanelco plc ('Stanelco' or the 'Company')

          Global Alliance Signed with Advanced Energy Industries, Inc.

Stanelco plc, the RF (radio frequency) applications group, is pleased to
announce that it has entered into a binding agreement with Advanced Energy
Industries, Inc. ('Advanced Energy') to enable the rapid adoption of its
revolutionary GREENSEAL tray-lidding and thermoforming technology across a
number of markets around the world.

The announcement follows the recent announcement of an alliance with Premier
Technologies, who will perform the mechanical conversions. Advanced Energy,
under this agreement, will perform the RF conversion in conjunction with Premier
and together will offer a turnkey solution for retrofitting in the US, Canada
and Mexico.

Advanced Energy (www.advanced-energy.com) (Nasdaq: AEIS), is a global leader in
innovative process power delivery management, including RF, mid-frequency and DC
solutions. It will supply, fit and commission the RF component of Stanelco's
GREENSEAL technology. The agreement extends to Advanced Energy co-operating with
original equipment manufacturers to enable the GREENSEAL technology to be
installed in new equipment prior to supply to end users.

In addition, Advanced Energy will also make preparations to be in a position to
retrofit the GREENSEAL technology in the other markets were it has the required
infrastructure to carry out a full implementation and back up support program.
These markets include Germany, Japan, UK and other European and Far East
markets. The agreement will allow the rapid and scaleable roll out of GREENSEAL
technology in a number of countries simultaneously.

Stanelco is intended to negotiate a separate exclusive supply agreement with
Advanced Energy to ensure a smooth, uninterrupted supply of RF power delivery
system to fulfil the total requirements of the project.

Advanced Energy will receive a minority interest in Stanelco's conversion and
licence fees for each machine it helps to retrofit and support.

As with Premier Technology, Advanced Energy will be sending a contingent of
engineers to Stanelco for an extended period of training and familiarisation and
it is anticipated that the project will be ready to commence operation within
three months.

Ian Balchin, CEO of Stanelco plc said:

'This is further excellent news for Stanelco as we look to roll out our
technology across the world. Whilst we remain focused on the roll out with ASDA
in the UK and Ireland, today's announcement means that we will be able to move
quickly and with scale into a number of markets as demand for our technology
grows. Advanced Energy has the innate knowledge of RF that is applicable to our
specific application which will be easily and quickly adaptable for the needs of
this project. This agreement eliminates delays to the project due to the highly
specific and limited availability of trained RF engineers and also removes
barriers to a rapid roll out of this revolutionary technology in the major
markets of the world.'

Chris Near, Director, Business Development Industrial and New Markets of
Advanced Energy said:

'We are delighted to be given the opportunity to provide a global implementation
and back up facility for this program. We have worked with Stanelco for many
years, have supplied them with our equipment and we are very pleased to be a
major contributor and supplier to this new and exciting program.'

Ends

For further information please contact:
Ian Balchin, Chief Executive
Stanelco PLC
Tel: [phone]

Jonathon Brill/Billy Clegg
Financial Dynamics
Tel: [phone]


Notes to Editors:

About Stanelco

Stanelco was founded in 1953 and is a world leader in the development of radio
frequency technologies for processing polymers for edible and packaging
applications and the design and manufacture of optical fibre technology,
induction heating and dielectric welding equipment. The Company's current core
business is the manufacture of optical fibre using Radio Frequency (RF)
technology. Stanelco has been applying its technology to other markets. Current
developments include biodegradable air cushion packaging, sealing of low-cost
conventional plastics for food packaging, water-soluble detergent capsules,
foamed starch trays, edible sachets and waste packing.

About Advanced Energy

Advanced Energy is a global leader in the development and support of
technologies critical to high-technology manufacturing processes used in the
production of semiconductors, flat panel displays, data storage products,
compact discs, digital video discs, architectural glass and other advanced
product applications.

Leveraging a diverse product portfolio and technology leadership, Advanced
Energy creates solutions that maximize process impact, improve productivity and
lower cost of ownership for its customers.  This portfolio includes a
comprehensive line of technology solutions in power, flow and thermal management
and plasma and ion beam sources for original equipment manufacturers (OEMs) and
end-users around the world.

Advanced Energy operates in regional centers in North America, Asia and Europe,
and offers global sales and support through direct offices, representatives and
distributors.  Founded in 1981, Advanced Energy is a publicly held company
traded on Nasdaq National Market under the symbol AEIS.  More information can be
found at www.advanced-energy.com.

Advanced Energy is a trademark of Advanced Energy Industries, Inc.


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