xinyuan si one of the main supplies of transformer insulation pressboard,insulation component and cable paperin China.Annual production capacities are 6300*3200mm high voltage insulation boards 8500t,2000*1000mmpre-compressed board 1500t, AC&DC lead exit 600sets,barious kinds of machined components 2000t and 0.08--0.17mm calbe paper 1500t.