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Sigmatron International, Inc.https://pcaobus.org/form-ap-filings/11067/11067Sigmatron International, Inc.110678/17/2017 9:12:58 AM2017cf629a2a-a3a1-4f71-97e5-2cc7dac630f8243BDO USA, LLP55116Sigmatron International, Inc.915358SGMA0024311572Jay Carroll Luedtke0024311572True