"You can see these boxes which are covered with metal foils for thermal reasons, and they are also, most of the time, thermally controlled inside to keep reasonable temperature inside each of these containers"

This quote by Claude Nicollier is referring to using metal foils to cover boxes for thermal factors. This is a common practice in order to keep a reasonable temperature inside the containers. The metal hinders act as a barrier to keep the heat in or out, depending on the desired temperature level. The boxes are likewise normally thermally controlled from the inside, indicating that the temperature level can be gotten used to the desired level. This is useful for a variety of factors, such as keeping food or other products at a specific temperature level. Using metal foils and thermal control is an efficient way to maintain a wanted temperature inside the containers.