Bakelite includes: phenolic paper and phenolic cotton fabric material. Phenolic paper material includes: laminate and tube, it is composed by phenolic resin and paper. Made of insulation paper impregnated with phenolic resin in heat-rolling and tightening, baking, pressing and curing into laminate or tube shape. Phenolic cotton fabric material includes: laminate, rod and tube, it is composed by phenolic resin and cotton fabric. Made of cotton cloth impregnated with phenolic resin in heat-rolling and tightening, baking, pressing and curing into laminate, rod or tube shape.