The English have done it, tried it, been there. The Japanese have partially tried it, and an American company on the West Coast has also been seeking capital to undertake a pilot plant operation to do it. Everyone wants to make a product that will offer a self-heating element in the package so it will heat whatever the package contains without the need for electricity, gas or external heat of any kind. The English have done this with a very heavy can around which is a jacket that heats up ...

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