Exhibit 21

PPG Industries, Inc.

And Consolidated Subsidiaries

Subsidiaries of the Registrant

December 31, 2004

Significant subsidiaries included in the 2004 consolidated financial statements of the Company are:

	Percentage of Voting Power
United States:
LYNX Services, L.L.C. – Kansas	100	%
Pinetree Stockholding Corporation – Delaware	100
PPG Architectural Finishes, Inc. – Delaware	100
PPG Auto Glass, LLC – Delaware	66
PPG Capital LLC – Delaware	100
PPG Industries Fiber Glass Products, Inc. – Delaware	100
PPG Industries International, Inc. – Delaware	100
PPG Industries Ohio, Inc. – Delaware	100
PPG Industries Securities, Inc. – Delaware	100
PRC-DeSoto International, Inc. – California	100
Stan-Mark, Inc. – Delaware	100
The CEI Group, Inc. – Pennsylvania	60
Transitions Optical, Inc. – Delaware	51
Canada:
PPG Canada Inc. – Canada	100
Europe:
Bellaria S.p.A. – Italy	100
HOBA Lacke und Farben GmbH – Germany	100
PPG Coatings B.V. – The Netherlands	100
PPG Coatings SA – France	99.85
PPG Holding SAS – France	100
PPG Holdings B.V. – The Netherlands	100
PPG Holdings (U.K.) Limited – United Kingdom	100
PPG Iberica, S.A. – Spain	100
PPG Industries Chemicals B.V. – The Netherlands	100
PPG Industries Europe – France	100
PPG Industries Fiber Glass B.V. – The Netherlands	100
PPG Industries France SAS – France	100
PPG Industries Italia S.r.l. – Italy	100
PPG Industries Kimya Sanayi Ve Ticaret Anonim Sirketi – Turkey	100
PPG Industries Lacke GmbH – Germany	100
PPG Industries Lackfabrik GmbH – Germany	100
PPG Industries Poland Sp. z.o.o. – Poland	100
PPG Industries (UK) Limited – England	100
PPG Ireland International Financial Company Limited – Ireland	100
PPG Luxembourg Finance S.àR.L – Luxembourg	100
PPG Luxembourg Holdings S.àR.L. – Luxembourg	100
PPG Optical Holdings Ireland – Ireland	100
PPG-Sipsy SAS – France	100
Transitions Optical Holdings B.V. – The Netherlands	51
Transitions Optical Limited – Ireland	51
Asia/Pacific:
PPG Coatings (Hong Kong) Co., Limited – Hong Kong	70
PPG Coatings (Malaysia) Sdn. Bhd. – Malaysia	100
PPG Coatings (Thailand) Co., Ltd – Thailand	100
PPG Coatings (Tianjin) Co., Ltd. – China	70
PPG Industries Australia PTY Limited – Australia	100
PPG Industries New Zealand Limited – New Zealand	100

Exhibit 21

PPG Industries, Inc.

And Consolidated Subsidiaries

Subsidiaries of the Registrant

December 31, 2004

PPG Industries (Singapore) Pte., Ltd. – Singapore	100
PPG Japan Ltd.- Japan	100
PPG Packaging Coatings (Suzhou) Co., Ltd – China	90.4
PPG Paints Trading (Shanghai) Co., Ltd. – China	100
PRC-DeSoto Australia Pty Ltd. – Australia	100
Taiwan Chlorine Industries Ltd. – Taiwan	60
Transitions Optical Philippines, Inc – Philippines	51
South America:
PPG Industrial do Brasil Limitada – Brazil	100
PPG Industries Argentina S.A. – Argentina	100
Mexico:
PPG Industries de Mexico, S.A. de C.V. – Mexico	100