Cal. Pub. Res. Code § 14548
(a) For purposes of this section, “thermoform plastic container” means a plastic container, such as a clamshell, cup, drinking cup, pod, tub, lid, box, tray, egg carton, or similar rigid, nonbottle packaging, formed from sheets of extruded resin and used to package items such as fresh produce, baked goods, nuts, deli items, and nonbottle beverages. The term does not include any of the following:
(5) A thermoform plastic container of a resin type for which the total amount of the resin type sold in California annually is either of the following: