地处渤海的莱州湾畔,海洋渔业资源丰富。为了海鲜产品的保鲜和储运,一条渔船或一个普通商贩每年都要消费价值3000-5000元之间的保温盒。当然保温盒在其他方面,例如瓜果蔬菜及馒头和玉米等鲜熟食品方面也已得到广泛应用,消费量同样大得惊人。原因是保温盒的强度太差,许多保温盒的寿命只有几个月甚至几天的时间。一旦 Is located in the Bohai Sea Laizhou Bay, rich marine fisheries resources. For the preservation of fresh seafood and storage and transportation, a fishing boat or an ordinary trader consumes a thermal box between 3000-5000 yuan per year. Of course, the thermal insulation box has also been widely used in other areas, such as fresh fruits and vegetables such as fruits and vegetables, and steamed bread and corn. The consumption is equally staggering. The reason is that the strength of the thermal insulation box is so poor that many thermal insulation boxes have a life span of only a few months or even a few days. once