Receipts from selling welding electrodes (welding rods), which melt to provide filler or fused metal, to a person engaged in the construction business may be deducted from gross receipts if the buyer delivers a nontaxable transaction certificate (nttc) or alternative evidence to the seller and the buyer delivering the nttc uses the welding electrodes in such a way that they become an ingredient or component part of the construction project.
N.M. Admin. Code § 3.2.209.13