The raw materials of fresh food and canned food are the same, and the latter is the reprocessing of the former. Fresh food is indeed nutritious, but it has a short shelf life and is not easy to preserve. Some chemicals are added to canned food, but a small amount of food has little effect on human body, and the storage time is long. In terms of carrying, fresh food is not easy to carry, on the contrary, canned food is convenient to carry and can be ready to eat. Fresh food is suitable for those who have time to cook, and canned food is suitable for those who live fast.<br>
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