FULL FOOD CODE:
Sec. 4119. (1) Except as otherwise provided in subsection (2), a person licensed as a food establishment under this chapter shall keep a copy of the current license or temporary license furnished by the department posted and exposed in a conspicuous place for public inspection. A conspicuous place is the principal place where food business is transacted. (2) In the case of vending machines, the name and address and telephone number of the current vending machine location operator shall be conspicuously displayed on each vending machine.

FULL FOOD CODE:
(A) Wall and ceiling covering materials shall be attached so that they are EASILY CLEANABLE. (B) Except in areas used only for dry storage, concrete, porous blocks, or bricks used for indoor wall construction shall be finished and SEALED to provide a SMOOTH, nonabsorbent, EASILY CLEANABLE surface.