Diamond Doted Presspaper,DDP,Diamond Dot Press paper, Diamond Dotted, Diamond pattern DPP,D.D.P ,DIAMOND DOTTED FILM  china youngmancn com leading D.D.P.-Diamond dotted insulation paper DIAMOND DOTTED FILM is made of electrical insulating paper with diamond-shape epoxy resin dotted in both sides. The epoxy resin used in D.D.P. contains a kind of incubative hardener material, it is a dry and crisp material at normal temperature use in Good dielectric properties and mechanical properties after being heat-solidification. As interturn insulation for coils of oil-immersed transformers Interlayer insulation of distribution transformers competitive quote in china .