"Low-Emissivity Insulating Glass"  is a series of high-performance low-emissivity products. The vacuum sputtering process coats glass surfaces with several layers of different materials. Among these, a silver layer effectively reflects infrared rays while maintaining excellent thermal performance. Beneath the silver layer is an anti-reflective tin oxide (SnO₂) base layer that increases the transparency of the glass. Above the silver layer is an isolating nickel-chromium (NiCr) alloy coating. The main function of the top anti-reflective tin oxide (SnO₂) layer is to protect the other coating layers. This product offers the high transparency, low reflectivity, good thermal insulating and energy-saving properties required of modern architectural glass.