(1) If a public entity is to invite bids providing that the work may be executed through a sub-contractor as well, it shall specify the following matters in the bidding documents:
(a) That he or she may cause the work to be executed by a sub-contractor,
(b) That a maximum of twenty-five percent of the work may be executed through a sub-contractor and description of the nature of such work,
(c) The criteria as to the qualification of the sub-contractor, as required.
(2) Where the criteria as to qualification are specified pursuant to sub-rule (1), the bidder shall, prior to making the procurement contract, submit the document demonstrating the criteria as to the qualification of the sub-contractor.