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Based on the polyurethane that has good thermal insulationproperties as the inner materials of cold storage panels,the interlayerstyle panel made by the stainless steel panels is adopted outside.It canreduce transter of heat caused by the dfferent temperature differencesinside and outside for the maximum fficiency in the freezing systemThe optional fihicknessa100, 120,150,180. 200 and 250mm