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February 1, 2005 No.1038

MHI to Ship 500th "MAC" Centrifugal Compressor
Tokyo, February 1, 2005 - This month Mitsubishi Heavy Industries, Ltd. (MHI) will ship its 500th "MAC" compressor from its Hiroshima Machinery Works. The MAC (Mitsubishi Advanced Compressor) unit is part of MHI's lineup of large-size, industrial centrifugal compressors used in petrochemical and natural gas plants. The 500th MAC will be used for gas processing at a plant in the United Arab Emirates (UAE). On the strength of the achievement of its 500th MAC delivery, MHI intends to further boost its centrifugal compressor marketing activities both at home and abroad.

MAC is a centrifugal compressor developed by MHI based on its experience and proprietary technological expertise accumulated since 1917, the year it began building compressors. The first MAC unit was delivered to the Mizushima plant of Mitsubishi Chemical Corporation in 1987. Since then MHI has expanded the application of its compressors to encompass a wide range of chemical-related plants, and in the process it has become one of the world's leading manufacturers of centrifugal compressors. In the areas of petrochemical plants (ethylene, fertilizers, methanol, etc.) and oil refining, the company now enjoys a near 25% market share.

Centrifugal compressors are used for compression of natural gas or gases produced by crude-oil cracking in order to prepare them for chemical reaction processing downstream or for feeding into pipelines. As a core element essential to plants and pipelines, centrifugal compressors thus support the development of petrochemical and other energy industries worldwide.

MAC units realize excellent efficiency, high reliability and outstanding ease of maintenance through the adoption of individually optimized design enabled by CAE (computer-aided engineering), three-dimensional impellers* and MHI's unique vibration suppression system. They deliver performance optimized to match the needs of all plants. MHI further satisfies the diversified demands of its customers through manufacture of centrifugal compressors and steam turbines, the driver of the compressor, at the same plant, the Hiroshima Machinery Works. This packaging arrangement enables MHI to control quality and delivery reliability throughout the entire system.

Going forward, demand for centrifugal compressors is expected to increase in applications relating to ethylene, ammonia, urea and methanol plants, oil refineries and, as illustrated by the forthcoming delivery to UAE, gas-related fields. MHI intends to meet this expanding demand through aggressive development of products precisely responding to every user requirement and increasingly active marketing.

*Note: A three-dimensional impeller has three-dimensionally curved surfaces that enable it to a) compress gas in the compressor efficiently with lesser energy and b) achieve an optimized gas flow.

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About Mitsubishi Heavy Industries
Mitsubishi Heavy Industries, Ltd. (MHI), headquartered in Tokyo, Japan, is one of the world's leading heavy machinery manufacturers, with consolidated sales of 2,373 billion yen in fiscal 2003 (year ended March 31, 2004). MHI's diverse lineup of products and services encompasses shipbuilding, steel structures, power plants, chemical plants, steel plants, environmental equipment, industrial and general machinery, aircraft, space rocketry and air-conditioning systems.

For more information, please visit the MHI website (http://www.mhi.co.jp).


PRESS CONTACT:
Hideo Ikuno: h.ikuno@daiya-pr.co.jp
Tel: +813-6716-5277, Fax: +813-6716-5929
Daiya PR (in charge of public relations for Mitsubishi Heavy Industries, Ltd.)
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