Exhibit 21.1


SUBSIDIARIES OF PQ GROUP HOLDINGS INC.

ENTITY
 
JURISDICTION
PQ Group Holdings Inc.
 
Delaware
PQ Holdings Inc.
 
Delaware
CPQ Midco I Corporation
 
Delaware
PQ Corporation
 
Pennsylvania
PQ Holdings I Limited
 
United Kingdom
PQ Intermediate Limited
 
United Kingdom
PQ Germany GmbH
 
Germany
PT PQ Silicas Indonesia
 
Indonesia
PQ Sweden A.B.
 
Sweden
PQ Finland Oy
 
Finland
PQ Silicas Holdings South Africa Pty Ltd.
 
South Africa
PQ Silicas South Africa Pty Ltd.
 
South Africa
Quaker Chemicals South Africa Pty Ltd. 1
 
South Africa
PQ International Holdings Inc.
 
Delaware
PQ Netherlands Holding LLC
 
Delaware
Potters International Holdings S.à.r.l.
 
Luxembourg
Potters Leveraged Lender LLC
 
Delaware
PQ Silicas Asia Pacific Pte Ltd.
 
Singapore
PQ Silicates Ltd. 2
 
Taiwan
PQ International C.V.
 
Netherlands
PQ Netherlands Cooperative LLC
 
Delaware
PQ International Coöperatie U.A.
 
Netherlands
PQ Silicas Brazil Ltda.
 
Brazil
PQ Acquisition B.V.
 
Netherlands
PQ Canada Company
 
Canada
PQ Australia LLC
 
Delaware
NSL Australia Company
 
Canada
NSL Canada Company
 
Canada
National Silicates Partnership
 
Canada
PQ Europe Coöperatie U.A.
 
Netherlands
PQ Europe ApS
 
Denmark
PQ Silicas B.V.
 
Netherlands
PQ Zeolites B.V.
 
Netherlands
Zeolyst C.V. 3
 
Netherlands
PQ Italy S.r.l.
 
Italy
PQ France S.A.S.
 
France
PQ Silicas UK Limited
 
United Kingdom
PQ Chemicals (Thailand) Limited
 
Thailand
PQ Holdings Mexicana, S.A. de C.V. 4
 
Mexico
Silicatos y Derivados, S.A. de C.V.
 
Mexico
PQ China (Hong Kong) Limited
 
Hong Kong
PQ Holdings Australia Pty Limited
 
Australia
1
Represents a joint venture company of which the registrant indirectly owns 49% of the voting equity.
2
Represents a joint venture company of which the registrant indirectly owns 50% of the voting equity.
3
Represents a joint venture company of which the registrant indirectly owns 50% of the voting equity.
4
Represents a joint venture company of which the registrant indirectly owns 80% of the voting equity.





Exhibit 21.1


PQ Australia Pty. Limited
 
Australia
PQ Mexico Holdings B.V.
 
Netherlands
PQ Mexico S. de R.L. de C.V.
 
Mexico
Zeolyst International 5
 
Kansas
Eco Services Operations Corp.
 
Delaware
PQ Asia Inc.
 
Delaware
Potters Netherlands Holding LLC
 
Delaware
Potters Netherlands Holdings I C.V.
 
Netherlands
Potters Netherlands Holdings II B.V.
 
Netherlands
Sovitec Mondial S.A.
 
Belgium
Sovitec International B.V.
 
Netherlands
Sovitec Belgium S.A.
 
Belgium
Beads Belgium S.A.
 
Belgium
Sovitec Iberica, S.A.
 
Spain
Asociación para el Estudio de las Tecnologias de Equipamiento de Carreteras, S.A. 8
 
Spain
Sovitec France S.A.S.
 
France
Glass Beads S.A.
 
Argentina
KILT, LLC 6
 
Delaware
Delpen Corporation
 
Delaware
Commercial Research Associates, Inc.
 
Pennsylvania
PQ Systems Incorporated
 
Pennsylvania
PQ Export Company
 
Delaware
PQ International, Inc.
 
Pennsylvania
Philadelphia Quartz Company
 
Pennsylvania
Potters Holdings GP, Ltd.
 
Cayman Islands
Potters Holdings, LP
 
Cayman Islands
Potters Holdings II GP, LLC
 
Delaware
Potters Holdings II, LP
 
Delaware
Potters Industries Holding, Inc.
 
Delaware
Potters Industries, LLC
 
Delaware
SAJB Holding Company, LLC
 
Delaware
Potters Ballotini S.A.S.
 
France
Societe Recyclage Produit Verrier Industriels SAS
 
France
Interminglass Sp. Z.o.o.
 
Poland
Interminglass Holding Sp. z.o.o.
 
Poland
Potters (Thailand) Limited 7
 
Thailand
Potters Industries Acquisition Pty. Ltd.
 
Australia
Potters Industries Pty. Ltd.
 
Australia
Potters Industrial Limitada
 
Brazil
Potters Canada Holding Company
 
Canada
Potters Canada Holding II Company
 
Canada
PNA Partnership
 
Canada
Potters-Ballotini Co., Ltd.
 
Japan
Potters Nederland B.V.
 
Netherlands
Ballotini Panamericana S. de R.L. de C.V.
 
Mexico
Potters Ballotini Acquisition GmbH
 
Germany
Potters Ballotini GmbH
 
Germany
Potters Ballotini Ltd.
 
United Kingdom
Northern Cullet Ltd.
 
United Kingdom
5
Represents a joint venture company of which the registrant indirectly owns 50% of the voting equity.
6
Represents a joint venture company of which the registrant indirectly owns 72.5% of the voting equity.
7
Represents a joint venture company of which the registrant indirectly owns approximately 75% of the voting equity.
8
Represents a joint venture company of which the registrant indirectly owns approximately 22% of the voting equity.