Attached files
file | filename |
---|---|
EX-32.2 - EX-32.2 - POWELL INDUSTRIES INC | exhibit32210k2020.htm |
EX-32.1 - EX-32.1 - POWELL INDUSTRIES INC | exhibit32110k2020.htm |
EX-31.2 - EX-31.2 - POWELL INDUSTRIES INC | exhibit31210k2020.htm |
EX-31.1 - EX-31.1 - POWELL INDUSTRIES INC | exhibit31110k2020.htm |
EX-23.1 - EX-23.1 - POWELL INDUSTRIES INC | exhibit23110k2020.htm |
EX-21.1 - EX-21.1 - POWELL INDUSTRIES INC | exhibit21110k2020.htm |
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