Guangzhou Mankun Electronics Co., Ltd. provides the development and production of single-sided printed circuit boards based on 94V-0 flame retardant FR4 foil. Because of its mechanical properties, FR4 is the most common material for PCB production. It is a composite material composed of dielectric lined with copper foil on the outside. Dielectric is pressed by several layers of glass cloth impregnated with epoxy resin. Foil FR4 glass tape has good hygroscopicity, heat resistance, and low price.