Any person owning or operating a controlled atmosphere room or storage building or packers or repackers of apples coming under section 539 shall register with the commissioner on a form prescribed by the commissioner. The registration period shall commence on August 1st and end on July 31st of each year. Owners or operators of such a room or storage building shall register on or before August 1st of each year.  

The commissioner shall assign each approved registrant a registration number preceded by the letters "Maine C.A." This number shall be clearly marked on all containers coming under section 539 and shall be in accordance with all provisions of law pertaining to markings for apples.