Mass. Gen. Laws ch. 111 § 245
"Firefighting personal protective equipment", clothing or wearable items designed, intended or marketed to be worn by firefighting personnel in the performance of their duties that is designed for use in fire and rescue activities, including, but not limited to, jackets, pants, footwear, gloves, helmets and respiratory equipment.
"Intentionally-added PFAS", PFAS chemicals that are added to a product or that enter the product from the manufacturing or processing of the product; provided, however, that the manufacturer of the product knows, or is reasonably expected to know, or possesses or controls information of the addition of PFAS chemicals; and provided further, that "intentionally-added PFAS" shall include any degradation products containing PFAS chemicals or products for which PFAS chemicals or PFAS precursors are used as a processing agent or mold release agent or PFAS created by chemical reactions.
"Local government", a county, city, town, fire district, regional fire protection authority or special purpose district that provides firefighting services.
"Manufacturer", a person, firm, association, partnership, corporation, organization, joint venture, importer or domestic distributor that manufactures, sells or distributes firefighting agents or firefighting equipment; provided, however, that in the case of a product imported into the United States, "manufacturer" shall include the importer or first domestic distributor of the product if the person that manufactured or assembled or whose brand name is affixed to the product does not have a presence in the United States.
"Perfluoraolkyl and polyfluoraolkyl substances" or "PFAS chemicals", a class of fluorinated organic chemicals containing at least 1 fully fluorinated carbon atom.
Mass. Gen. Laws ch. 111, § 111:245