| http://www.w3.org/ns/prov#value | - If the difference in the thermal expansion coefficient between the two adjacent resin layers is less than 0.001%, it is difficult to deform the laminate with the above-described daily available cooling element such as an ice, various kinds of cool accumulating bodies, cooling in a refrigerator or a freezer and a cool air generating device incorporating ice pieces therein, and a heating element suc
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