At the commissioner’s discretion, he may convene a hearing and, after notice and such hearing, may suspend or revoke the license of any manufacturer or may impose a civil penalty of not more than three thousand dollars per violation on any manufacturer if he finds that such manufacturer has failed to comply with any provision of sections 14-67a to 14-67d, inclusive, or 42-133r to 42-133dd, inclusive, or any provision of law relating to the conduct of his business.