No inedible grease, inedible tallow, or other inedible rendered fat shall be imported into the United States unless it has been first denatured as prescribed in Sec. 327.25 of this part and the containers marked as prescribed by Sec. 316.15 of this subchapter or unless it is identified and handled as prescribed by Sec. 325.11 (b) or (c) of this subchapter. [54 FR 41049, Oct. 5, 1989]