-       Do not buy the canned food if the can was recessed or expanded

-       Do not buy the canned food if it is not well packaged

-       Check the expiry day before purchase.

-       Get knowledge with the origin of the canned food, and just choose the brands which are reliable.

-       Understand the ingredients of the canned food and beware of the allergenicity.

-       Go through the nutrition information which has been listed on the can.

(For reference only)