... ; 3.excellent insulation; 4.economy,longer life. FRP pultruded profiles--Channel(C-shapes) Characteristics of pultruded profiles: 1.wide range of ... 2.High strength, light weight, impact resistance 3.insulation, excellent magnetic permeability 4.anti-aging, long life, maintenance-free 5.fire ... limit 7.easy installation,can be arbitrarily cut frp grp channel