Xiamen Hongcheng Insulating Materials Co.,Ltd is professional supplier and exporter of variety electrical insulating materials.back on china national aero-technology department and received strong technical support from professional experts in universities and scientific insitution,is a member of insulating material division of china electrical equipment industrial association(IMD/CEEIA).We are specialized on supplying variety high degree of quality and cost effectiveness electrical insulating materials and achieve good reputation in china and international market,especially in nema grade GPO-3 rigid laminated sheet,polyimide film.all of our products are UL recognized.we are not just go bettween for suppliers and customers,it is our best advantage for further processing and converting based on your sample or drawings.