Rule 1145. All information relating to building systems and compliance assurance programs which the manufacturer or other party considers proprietary shall be so designated by them at the time of the submission, and shall be so held by the commission, the bureau, and by the inspection, evaluation and enforcing agencies, except as the commission or bureau determines in each case, that disclosure is necessary to carry out the purposes of the act and Act No. 442 of the Public Acts of 1976, as amended, being S15.231 et seq. of the Michigan Compiled Laws.
Mich. Admin. Code R. 408.31145