P-29, r. 1 - Regulation respecting food

Full text Identification and markings: Cans containing meat shall be marked in accordance with this Regulation.
In addition, the manufacturer’s code consisting of conventional signs, letters or figures shall appear on the lid of each can containing meat, for the purposes of identifying each lot and manufacturer and indicating the date of manufacture.
R.R.Q., 1981, c. P-29, r. 1, s.