2009.9.30
Mitsubishi Materials Corporation

Notice of Dissolving the PM Joint Venture
and the Accrual of Extraordinary Loss
Mitsubishi Materials Corporation (“MMC”) and Plansee Holding AG (“Plansee”) have agreed to dissolve
the joint venture on powder metallurgical (PM) products* (in which a 50 percent equity share is held
respectively by MMC and Plansee; the “Joint Venture”), and that MMC will succeed to related business inJapan and Malaysia while Plansee will succeed to related business in Europe, USA, etc.
Following the dissolution, MMC will post an extraordinary loss for the second quarter of the fiscal year
ending March 31, 2010.
1. Reasons for Dissolving the Joint Venture
MMC and Plansee integrated their respective PM businesses and established the Joint Venture in
December 2005. Since then, the Joint Venture has dedicated itself to the PM business and achieved
successful results by reciprocally utilizing their manufacturing bases, proprietary technologies,
marketing systems, etc.**
However, facing the global recession since last fall, MMC and Plansee have consulted with eachother on the Joint Venture’s direction for the future. As a result, both parties came to share theunderstanding that dissolving the Joint Venture is the most expedient method to cope flexibly andswiftly with rapidly changing automotive market environments and transform the Joint Venture into
region-specific business structures.
MMC and Plansee will continue maintaining the friendship built through the Joint Venture in the past.
2. Method for Dissolving the Joint Venture, etc.
(1) Method for dissolving the Joint Venture1) On the joint venture dissolution date, MMC is going to acquire the stocks of Mitsubishi MaterialsPMG Corporation (head office: Niigata, Japan), which engages in business in Japan, and of PMG
Klang Sdn. Bhd. (head office: Port Klang, Malaysia), which engages in business in Malaysia fromPlansee Mitsubishi Materials Global Sinter Holding S.A. (“PMGH”), the Joint Venture holding
company, and transform them into wholly owned subsidiaries of MMC.
2) Plansee is going to acquire MMC’s 50 percent share of PMGH on the joint venture dissolution date
and transform PMGH and its subsidiaries (in Germany, Spain, USA and China) into wholly owned
subsidiaries. Furthermore, Plansee will continue using the trademark “PMG” held by the JointVenture.
(2) Management of Businesses in Japan and Malaysia after dissolving the Joint Venture
After dissolving the Joint Venture, MMC is going to rename Mitsubishi Materials PMG Corporation
Diamet Corporation and PMG Klang Sdn. Bhd. DIAMET Klang Malaysia Sdn. Bhd. and manage
them as MMC Group companies.

- 1 -3. Description of the Joint Venture Company(1) Holding company
Plansee Mitsubishi Materials Global Sinter Holding S.A.
Corporate headquarters
Luxembourg(2)
Locations of subsidiariesJapan, China, Malaysia, Germany, Spain, U.S.A.
Co-Presidents:(3) Representatives and post
Takeshi Itaba (Senior Executive Officer of MMC)
Michael Krehl(4) Line of business
Manufacturing, development and sales of powder metallurgical products(5) Capital
5 Mil Euros(6) Date of establishment
December 1, 2005
(7) Fiscal term-endFebruary(8) Total assets
319 Mil Euros(9) Shareholders
50% by MMC, 50% by Plansee

4. Joint Venture Dissolution Date
December 1, 2009 (scheduled)
5. Impact on MMC’s Business Results
The dissolution of the Joint Venture will accrue an extraordinary loss of approximately ¥4.0 billion in
the second quarter of the consolidated fiscal year ending March 31, 2010.
However, MMC will not revise any business forecasts from this dissolution for the first six months of
the fiscal year ending March 31, 2010.
*

Powder metallurgical (PM) products
These products are manufactured by powder metallurgy, in which metal powder is pressed by thepressing machine before it is heated and congealed in the sintering furnace. Powder metallurgy is a
useful process that mass-produces metal products of complicated forms at low cost. Thus, PMproducts are used in many industries centering on automotive and electric-appliance makers.

**Please refer to the notice titled “Plansee Group and Mitsubishi Materials intend to merge their PMbusiness” released May 27, 2005, and the notice titled “Regarding the Spin-Off of the PM Business
Division by Company Split” (Japanese) released August 25, 2005, at MMC’s website.

- 2 -(Reference)
Summary of business that MMC is going to acquire(1) Business in Japan
1) Corporate name
Mitsubishi Materials PMG Corporation(To rename the company Diamet Corporation on December 1, 2009)2) Date of establishment
20053) Line of business
Manufacturing, development and sales of powder metallurgical products4) Corporate Headquarter Niigata City, Niigata Prefecture, Japan
5) Capital
1.5 Bil Yen
6) Shareholder
Wholly owned by PMGH (to be wholly owned by MMC on and after
December 1, 2009)
7) Representative
Yoshiyasu Iino, President(2) Business in Malaysia
1) Corporate name2) Date of establishment
3) Line of business4) Corporate Headquarter5) Capital6) Shareholder
7) Representative

PMG Klang Sdn. Bhd.
(To rename the company DIAMET Klang Malaysia Sdn. Bhd. on December
1, 2009)
1992
Manufacturing and sales of powder metallurgical productsPort Klang, Malaysia
30 Mil Ringgits
Wholly owned by PMGH (to be wholly owned by MMC on and after
December 1, 2009)
Masaaki Sokura, Managing Director- 3 -