350.13. For the purposes of this division,“original supplier” of corporeal movable property or a service means a person who makes a non-taxable supply of the property or service to another person who, in turn, supplies the property or service by way of a pass-through supply;
“pass-through supply” means a taxable or non-taxable supply of corporeal movable property or a service made by a person for consideration that is equal to the consideration paid or payable by the person to the supplier who supplied the property or service to the person;
“ultimate recipient” means a recipient of a pass-through supply.