Food heating packs are mainly used in food transportation, take-out, picnics and other scenarios that require insulation or heating.

In special environments, such as low temperature, high altitude, outdoor activities, etc., they can provide stable heat to keep food at a suitable temperature. However, challenges also come with it.

First, conditions may affect the performance of the heating pack. For example, the reaction rate slows down at too low a temperature, and the thin oxygen at high altitudes may lead to incomplete combustion.

Secondly, safety issues are the focus of attention. How to ensure that the heating pack does not produce harmful gases when used in a closed environment, and does not cause danger when expired or used improperly.

In addition, environmental protection is also one of the challenges, and it is necessary to develop degradable materials with little impact on the environment.

In general, the application of food heating packs in special environments must take into account performance, safety and environmental protection.