Exhibit 21
CLARCOR INC. SUBSIDIARIES
As of January 21, 2011

NAME |  | JURISDICTION OF INCORPORATION OR ORGANIZATION |  | PERCENT OF OWNERSHIP* |
Domestic |  |  |  |  |
Baldwin Filters, Inc. |  | Delaware |  |  | 100 | %
Baldwin South Africa, Inc. |  | Delaware |  |  | 100 | %
CLARCOR Air Filtration Products, Inc. |  | Kentucky |  |  | 100 | %
CLARCOR Consumer Products, Inc. |  | Delaware |  |  | 100 | %
CLARCOR Filtration Products, Inc. |  | Delaware |  |  | 100 | %
CLARCOR International, LLC |  | Delaware |  |  | 100 | %
CLARCOR Total Filtration, Inc. |  | Delaware |  |  | 100 | %
Clark Filter, Inc. |  | Delaware |  |  | 100 | %
CLC Support Services, Inc. |  | Delaware |  |  | 100 | %
Facet USA LLC |  | Delaware |  |  | 100 | %
Flo-Line Filters, Inc. |  | Texas |  |  | 100 | %
J.L. Clark, Inc. |  | Delaware |  |  | 100 | %
Keddeg Company |  | Missouri |  |  | 100 | %
Leedar, Inc. |  | Oklahoma |  |  | 100 | %
Martin Kurz & Co., Inc. |  | New York |  |  | 100 | %
Mexico Perry Equipment LLC |  | Texas |  |  | 100 | %
Perry Equipment Corporation |  | Delaware |  |  | 100 | %
Perry International Holdings, LLC |  | Delaware |  |  | 100 | %
Purolator Liquid Process, Inc. |  | Delaware |  |  | 100 | %
Purolator EFP, LLC |  | Delaware |  |  | 100 | %
Purolator Facet, Inc. |  | Delaware |  |  | 100 | %
Scientific Process Solutions, Inc. |  | Delaware |  |  | 100 | %
Total Filtration Services, Inc. |  | Ohio |  |  | 100 | %
TransWeb, LLC |  | New Jersey |  |  | 100 | %
TPS, LLC |  | Texas |  |  | 100 | %
United Air Specialists, Inc. |  | Ohio |  |  | 100 | %
International |  |  |  |  |  |
Airguard Asia Sdn. Bhd. |  | Malaysia |  |  | 100 | %
Airklean Engineering Pte. Ltd. |  | Singapore |  |  | 100 | %
Baldwin Filters (Aust) Pty Limited |  | Australia |  |  | 100 | %
Baldwin Filters (PTY) LTD SA. |  | South Africa |  |  | 100 | %
Baldwin Filters Limited |  | United Kingdom |  |  | 100 | %
Baldwin Filters N.V. |  | Belgium |  |  | 100 | %
CLARCOR Filtration (China) Co Ltd. |  | China |  |  | 100 | %
CLARCOR International Holdings B.V. |  | Netherlands |  |  | 100 | %
CLARCOR UK (Holdings) Limited |  | United Kingdom |  |  | 100 | %
CLARCOR UK Limited |  | United Kingdom |  |  | 100 | %
CLARCOR Filtration Commerce (Shanghai) Co. Ltd |  | China |  |  | 100 | %
Facet Deutschland GmbH |  | Germany |  |  | 100 | %
Facet Iberica S.A. |  | Spain |  |  | 100 | %
Facet FCE S.A.R.L. |  | France |  |  | 100 | %
Facet Industrial B.V. |  | Netherlands |  |  | 100 | %
Facet Industrial U.K. Limited |  | United Kingdom |  |  | 100 | %
Facet Italiana, S.p.A. |  | Italy |  |  | 100 | %
Filtros Baldwin de Mexico S.A. de C.V. |  | Mexico |  |  | 90 | %
Niagara Screen Products Limited |  | Canada |  |  | 100 | %
PECO Filters Limited |  | Canada |  |  | 100 | %
PECOFacet (Asia Pacific) |  | Malaysia |  |  | 100 | %
Peco Facet Filtration Equipment (Beijing) Co., Ltd. |  | China |  |  | 100 | %
PECO International (Lux) SARL |  | Luxembourg |  |  | 100 | %
PECOFACET DO BRAZIL COMERCIA DE FILTROS LTDA. |  | Brazil |  |  | 100 | %
Perry Equipment de Mexico SRL |  | Mexico |  |  | 100 | %
Perry Equipment Ltd. |  | United Kingdom |  |  | 100 | %
Perry Filtration Solutions SRL |  | Romania |  |  | 100 | %
Perry Holding de Mexico SRL |  | Mexico |  |  | 100 | %
Perry Operations de Mexico SRL |  | Mexico |  |  | 100 | %
Perry Properties de Mexico SRL |  | Mexico |  |  | 100 | %
Pujiang Novaeastern International Mesh Co., Ltd. |  | China |  |  | 100 | %
Purolator Advanced Filtration (Quzhou) Co Ltd. |  | China |  |  | 100 | %
SINFA, S.A. |  | Morocco |  |  | 80 | %
Weifang Yuhua Filters, Ltd. |  | China |  |  | 100 | %

* Direct or indirect