Yes, a heavy equipment dealer is required to render all tangible personal property used for the production of income, as required by Section 22.01, Tax Code. See also Section 23.1241(d) that addresses personal property held by a dealer and a dealer who sells predominately to other dealers. The more difficult question here is not whether they are required to render, but whether they are required to render the inventory that is otherwise appraised under Section 23.1241. It seems that chief appraisers have not been requiring those dealers to render their inventory, but have been considering the declaration they are required to file to meet the rendition requirement. Nonetheless, there is nothing specific in the Tax Code which exempts inventory owners from the rendition requirements.