两年前,一个英国人购买比利时人发明的专利,投资75万美元成立一个公司,生产“热罐头”。这种产品结构简单,但效果很好。一个15英两的罐头放进一个28英两的罐头盒里,两罐壁之间是塑料袋装的水,下面是生石灰小块。两者的重量是经过计算的,可使温度达到50℃。打开罐头后大约十分钟可以把罐头里的食品热好。在正常条件下,这种罐头可以保存三年。罐头里是米饭牛肉砂锅或者咖哩火鸡肉, Two years ago, an Englishman bought a Belgian invention patent and invested 750,000 U.S. dollars to set up a company to produce “hot cans”. This product structure is simple, but the effect is very good. A 15-inch can of two cans into a 28-British two cans, between the two walls is a plastic bag of water, the following is a small piece of lime. The weight of both is calculated, the temperature can reach 50 ℃. About 10 minutes after opening the can, heat the canned food well. Under normal conditions, this can be preserved for three years. Canned beef rice casserole or curry turkey,