Can I take the self-heating meal with me on the train?

self-heating meals can be taken on the train, but it is not recommended to eat self-heating meals on the train. Self-heated rice does not belong to inflammable and explosive goods and controlled dangerous goods, nor does it belong to drugs and restricted items. Whether it is put in a box or carried with you, there is no problem in passing the security check. However, since the heating package of self-heating rice can reach a high temperature of 1 degrees Celsius in a few seconds, the steam generated is easy to burn yourself and the surrounding passengers, and even trigger the smoke alarm, causing unnecessary trouble, so it is not recommended to eat self-heating rice on the train. Self-heating rice usually includes a heating bag, a rice bag and a vegetable bag. The heating package contains aluminum powder, calcium oxide, calcium hydroxide and other substances, which produce high temperature after contacting with water, making the rice package (usually cooked rice) in the rice package warm again. This kind of food does not need additional heating tools, such as microwave oven, so it is very convenient and fast. Because of its convenience, self-heating meals are particularly practical in outdoor exploration, tourism, and military missions.