(a)(1) For purposes of subparagraph (A) of subdivision (3) and subdivision (18) of section 12-412 and section 12-412i , a sale to a purchaser who will be making a finished product referred to in said sections, which sale would otherwise qualify for sales and use tax exemption pursuant to said sections except for the fact that such finished product is used by such purchaser to fulfill a paving contract, shall qualify for such exemption in the same manner as if such purchaser made a sale of such finished product.
(2) Nothing in subdivision (1) of this subsection shall apply the exemption under subdivision (18) of section 12-412 to a sale to a purchaser of materials that become an ingredient or component part of a finished product that is used by such purchaser to fulfill a paving contract.
(b) For purposes of subdivision (34) of section 12-412 , a sale of machinery to a purchaser that would otherwise qualify for sales and use tax exemption pursuant to said section, except for the fact that the products being manufactured with the purchased machinery are used by such purchaser to fulfill a paving contract, shall qualify for such exemption in the same manner as if such manufactured products were being sold by the purchaser.