Texas Tax Code - TAX § 158.053. Collection of Tax from Retailer

(1) any manufacturer maintaining, occupying, or using, permanently or temporarily, directly or indirectly, or through a subsidiary, affiliate, or agent, by whatever name called, an office, manufacturing facility, place of distribution, warehouse, storage place, or other place of business; and

(2) any manufacturer having a representative, agent, salesman, canvasser, or solicitor operating in this state under the authority of the manufacturer, or of its subsidiary, affiliate, or agent, for the purpose of selling, delivering, or the taking of orders for any manufactured home.