Dear [Success_Machine]:

Thank you for your inquiry. As background information, QUANTUM is a Tier One supplier to Original Equipment Manufacturers (OEMs) for engineered fuel delivery and fuel storage systems.

Our core competencies include: gaseous fuel storage, fuel metering, electronic controls and fuel system integration. These core competencies are applied to OEM alternative fueled vehicles, fuel cell applications and hydrogen refueling infrastructure.

Our approach is to design and supply a complete fuel system or storage subsystem to OEMs, such as General Motors, Ford, DaimlerChrysler, Hyundai, Toyota, etc. We do not sell our technologies through distributors as aftermarket parts, which differs from our parent company's (IMPCO) business model. We do not supply cylinders separate from a storage system we design for our OEM customers. It has been our experience that an integrated design approach is necessary to optimize the amount of natural gas or hydrogen stored on-board, ensure safety, and maintain the structural integrity of the vehicle and storage system under all conditions.

We have a number of cylinder sizes that were developed for specific applications. That is our current business model - we take an integrated approach to custom design systems for each customer application. We have produced cylinders that range from 11 in. diameter x 23 in. long (nominal dimensions), or 24 liter internal volume, to 22 in. diameter x 61 in. long, or 250 liter internal volume. We are also developing special use pressure cylinders up to 4 feet in diameter. The external dimensions and materials of construction are dependent on the application, specifically, whether the application is compressed natural gas, hydrogen, or hydrogen-natural gas blends, such as Hythane. Again, depending on the application, our cylinders are currently rated for 3600 to 5000 psig (250 - 350 bar).

We also have recently validated our storage technology for a service pressure of 10,000 psig (700 bar) cylinder for hydrogen. The newly adopted hydrogen standard developed by the European Integrated Hydrogen Project (EIHP) was used as the basis for this validation and German TUV regulatory approval. To date, our focus for high pressure gaseous storage cylinders has been automotive and other transportation applications.

I hope that gives you an overview of our fuel storage cylinders. Basically, we design and build systems to suit the customer's requirements. Specific to
your question, <snip>. We do not currently publish generic pricing for our hydrogen technologies.

If you would like QUANTUM to bid on the supply of a storage system for your application, please provide specifications, weight and space constraints, platform and application description, production intent, and timing.

The smallest cylinder we currently have validated for 5000 psi hydrogen storage has an internal volume of 28 liter and contains 0.66 kg of hydrogen at 5000 psi. The dimensions are:

Diameter = 9.35 in.
Length = 36 in.
Empty mass = 15 kg (without valves or regulators)

As a very rough order of magnitude, the engineering, development, testing, and validation of a small custom designed cylinder would be about $250,000 - 300,000, depending on the level of validation required. That would be a non-recurring cost. The unit price of the cylinders would depend on the production volumes.

Sincerely,
[QTWW sales rep]

QUANTUM Technologies WorldWide Inc
17872 Cartwright Road
Irvine, CA 92614

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** As far as I know the 5000 psi tank actually is much lighter compared to the fuel it holds versus the 10,000 psi tank. For hydrogen the 5000 psi tank stores 11.3 wt-% hydrogen, while the 10,000 psi tank stores only 7.3 wt-% hydrogen. They've sacrificed weight-reduction for volume reduction.