Gold, copper and silver metal coating in much infrared region, the wavelength array of over 4 mu m, a high reflectivity. As for The standard metallic coating thickness, total reflectivity of around 90%-95%, high infrared reflectivity is comparable to reduced emission charge (Lower-e), this would cut back the radiation elements https://nanodiamond-powder38158.oneworldwiki.com/6832997/the_basic_principles_of_polycarboxylate