Attached files
file | filename |
---|---|
EX-32.2 - EX-32.2 - POWELL INDUSTRIES INC | powlexhibit322q22021.htm |
EX-32.1 - EX-32.1 - POWELL INDUSTRIES INC | powlexhibit321q22021.htm |
EX-31.2 - EX-31.2 - POWELL INDUSTRIES INC | powlexhibit312q22021.htm |
EX-31.1 - EX-31.1 - POWELL INDUSTRIES INC | powlexhibit311q22021.htm |
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