Funds in the form of a grant made to an industrial resource center or to a Ben Franklin technology center by the partnership pursuant to this act shall be matched by private sector funds on a minimum basis to be established by regulation. Private matching funds shall include, but not be limited to, monetary or in-kind support from private businesses, corporations, individuals, trade associations, foundations and federally and locally subsidized grants. For Ben Franklin technology centers only, private matching funds shall also include machinery and equipment. Private matching funds shall not include any fees received by an industrial resource center or a Ben Franklin technology center for direct business services relating to a project subsidized by the partnership or interest accrued on proceeds from any State grant.