Materials: Body is fire-retardant ABS or PC, and the cover uses transparent PC. Merits: The whole luminaire is waterproof, dustproof and corrosion resistant, with IP65 rating and high transmittancy. Applicable occasion; Applicable to humid, dusty and corrosive occasions like workshops, chemical plants, cotton mills and etc.. Applicable occasions: Widely applicable to shops, supermarkets, plants and classroom. Luminaire mounting method: Suitable for surface mounting or suspended mounting with suspension leves.