Dear Mr. Terpandjian,

"........I would like to thank you, Mr. Thorstein, Tech. Manager-CarboTech, and the local Fal support team for a smooth start-up of our CarboTech PSA Nitrogen System at our Yanbu Chemical Storage Terminal.

Based on the training you provided to our personnel, and observing the unit in actual operation, I am convinced that your system is truly automatic, reliable and easy to operate.......Overall, we expect substantial savings in our operating
costs."

Sincerely,

R. C. Jereza
Terminal Manager
Arabian Chemical Terminals

Dear Mr. Terpandjian

I am pleased to inform you and your staff at CTW that our Carbo Tech PSA N2 gas generating system- in continuous use since June 1995 start-up our Yanbu Lube Blending Plant- has proven to be very reliable

Based on our experience, the unit runs automatically, and requires minimal maintenance. In addition, we have achieved substantial savings in our operating costs.

Yours Sincerely,

Paul D. Wright
SALACo-Plant Manager

"....we use Nitrogen gas in its manufacturing operations to produce top quality fluorescent lamps. From our experience the Carbon Molecular Sieves supplied by the above party is the most suitable one for generating Nitrogen gas through Pressure Swing Adsorption Process."

Gulf Advanced Lighting Co. LTD.

Pradeep Saxena
Project Manager

"Our company has built and installed more than 150 PSA nitrogen generators for controlled atmosphere over the past ten years. All of these systems contain parts from CarboTech and its' proprietary Carbon Molecular Sieve. In our experience, the maintaince has been minimal and most of the time it was limited to changing filters and the compressor oil according to manufacture's guidelines. We have also been pleased with the support and after sales service provided by your company.

Sincerely,

Gilbert Gerbaud
Managing Director
ABSOGER s.a.

Subject: Performance of your Membrane Nitrogen Units

Dear Dr. Boustany,

Reference is made to the Membrane Nitrogen Units supplied to us by your company, and we are pleased to inform you of our satisfaction in the units' performance, as well as, delivering the units on time."

Yours Sincerely,

Petrofac International LTD.

Dear Thorstein,

...The generator (PSA-N2) is reliable, simple to use, and requires almost no maintenance or operation attention. We have found it very convenient and cost effective to produce our own nitrogen instead of buying bottles...We will be happy to recommend a CarboTrade PSA-N2 Generator for anybody needing high purity nitrogen.

Sincerely,

Jeffrey Werner
Energy BioSystems Corp.

Dear Thorstein,

".......the start-up and operation has been trouble free. Required maintenance and operator attention is minimal as well. We are therefore saving time since we no longer have to handle bottles of nitrogen. The PSA N2 Plant has simplified the coffee packaging process.............."

Sincerely,

Scott C. Oldendorph
Purchasing Manager
Tostino Roasters of Fine Coffee

Dear Sirs,

Our Company is a distributor for CarboTrade PSA systems and has had experience with these over a period of 6 years.

We have installed many systems throughout a number of countries into a variety of industries such as food packaging, optical, communications, higher education etc.

We have developed an extermely good relationship with our customers, due in the main, to the reliability and robustness of the product.
A number of customers have indicated that they have achieved considerable savings with these on-site systems against the more conventional liquid or cylinder gas delivery systems.

Our policy has always been to let our successes be our best sales approach, accordingly we would be delighted to put you in touch with any of our customers directly where we are sure that you would receive a satisfactory or even glowing testimonial.

Yours sincerely,
For Products of Technology Ltd

Graham Sinclair
Managing Director

Dear Mr. Boustany,

Following your request, we are pleased to confirm to you that we have sold and installed during the past three years 19 PSA CarboTrade systems. These systems are successfully working in various industries such as:

Spectrometers, Tyre manufacturers, Universities, Photo, Plastics industries, Museum protection, Perfumes and Food industries such as wine, oil, and vegetable extracts.

The nitrogen supplied is compatible with human food contact.

Best regards,

for TechnicAir - France

Gerard Crouzet