Exhibit 21.1

SUBSIDIARIES OF CERADYNE, INC.

	State or other Jurisdiction of
Name of Subsidiary	Incorporation or Organization
Ceradyne ESK, LLC	Delaware
•    ESK Ceramics Geschäftsführungs GmbH	Germany
•    ESK Ceramics GmbH and Co. KG	Germany
•    ESK Ceramics France S.A.S.U.	France
Ceradyne Canadian Holdings, Inc.	Delaware
•    Ceradyne Canada ULC	Alberta, Canada
Ceradyne Armor Systems, Inc	Delaware
Minco, Inc.	Tennessee
Ceradyne Cayman Holdings, Inc.	Cayman Islands
•    Ceradyne Hong Kong Co., Ltd.	Hong Kong
•    Ceradyne (Tianjin) Technical Ceramics Co., Ltd.	China
Ceradyne EPB, Inc.	Delaware
•    Boron Products, LLC	Delaware