EXHIBIT 21 SUBSIDIARIES AND AFFILIATES OF THE REGISTRANT Percentage of voting securities Jurisdiction of owned directly or Name Incorporation indirectly by Quaker ---- ------------- -------------------- * Quaker Chemical Europe B.V. Holland 100% * Quaker Chemical B.V. Holland 100% +* Quaker Chemical Holdings UK United Kingdom 100% Limited * Quaker Chemical Limited United Kingdom 100% * Quaker Chemical S.A. France 100% ** Quaker Chemical South Republic of 50% Africa (Pty.) Limited South Africa * Quaker Chemical, S.A. Spain 100% * Quaker Chemical S.A. Argentina 100% + Quaker Chemical Participacoes, Brazil 100% Ltda. * Quaker Chemical Industria e Brazil 60% Comercio S.A. * Quaker Chemical India Limited India 55% ** Kelko Quaker Chemical, S.A. Venezuela 50% * Quaker Chemical Limited Hong Kong 100% * Wuxi Quaker Chemical Co., China 60% Ltd. +* Quaker Chemical South East Singapore 100% Asia Pte. Ltd. ** Nippon Quaker Chemical, Ltd. Japan 50% * Quaker Chemical (Australasia) State of New South 51% Pty. Limited Wales, Australia ** TecniQuimia Mexicana Mexico 40% S.A. de C.V. +* SB Decking, Inc. (formerly Delaware, U.S.A. 100% Selby, Battersby & Co.) * Quaker Chemical Corporation Delaware, U.S.A. 100% + Quaker Chemical Management, Delaware, U.S.A. 100% Inc. * AC Products, Inc. California, U.S.A. 100% ** Fluid Recycling Services Michigan, U.S.A. 50% Company, LLC - ------------------ + A non-operating company. * Included in the consolidated financial statements. ** Accounted for in the consolidated financial statements under the equity method.