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10-K - 10-K - NATIONAL TECHNICAL SYSTEMS INC /CA/a2198399z10-k.htm
EX-31.2 - EX-31.2 - NATIONAL TECHNICAL SYSTEMS INC /CA/a2198399zex-31_2.htm
EX-23.1 - EX-23.1 - NATIONAL TECHNICAL SYSTEMS INC /CA/a2198399zex-23_1.htm
EX-23.2 - EX-23.2 - NATIONAL TECHNICAL SYSTEMS INC /CA/a2198399zex-23_2.htm
EX-32.2 - EX-32.2 - NATIONAL TECHNICAL SYSTEMS INC /CA/a2198399zex-32_2.htm
EX-31.1 - EX-31.1 - NATIONAL TECHNICAL SYSTEMS INC /CA/a2198399zex-31_1.htm
EX-32.1 - EX-32.1 - NATIONAL TECHNICAL SYSTEMS INC /CA/a2198399zex-32_1.htm

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EXHIBIT 21.1


NATIONAL TECHNICAL SYSTEMS, INC.

LIST OF SUBSIDIARIES

NTS TECHNICAL SYSTEMS, A CALIFORNIA CORP.

ACTON ENVIRONMENTAL TESTING CORPORATION, A MASSACHUSETTS CORP.

APPROVED ENGINEERING TESTING LABORATORIES, INC., A CALIFORNIA CORP.

ETCR INC., A CALIFORNIA CORP.

XXCAL, INC., A CALIFORNIA CORP.

NATIONAL QUALITY ASSURANCE, INC., A MASSACHUSETTS CORP. (50% OWNED)

NTS EUROPE, GMBH

AETL TESTING, INC. DBA NTS CALGARY

PHASE SEVEN LABORATORIES, A CALIFORNIA CORP.

UNITED STATES TEST LABORATORY, LLC.

ELLIOTT LABORATORIES, LLC

UNITEK TECHNICAL SERVICES, INC.




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NATIONAL TECHNICAL SYSTEMS, INC. LIST OF SUBSIDIARIES