US EditionA bag that keeps disposable hand warmers warmer for longer has been developed by a woman in her 70s from Aomori; patents obtained in Japan and Taiwan
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A bag that keeps disposable hand warmers warmer for longer has been developed by a woman in her 70s from Aomori; patents obtained in Japan and Taiwan
Extend the "lifespan" of disposable hand warmers and keep them warm. Kumiko Kawamura (75) from Aomori City has developed a bag that keeps hand warmers warm for longer, and has obtained patents in Japan and Taiwan. By placing the hand warmers in an aluminum bag with a small hole in it, they can be used for several days. Kawamura...
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