changsifangzhanzhencifeizhizaotugongbushitongguojuzhichangsichengwanghegujiedefangfazhicheng，qixianweipailiechengsanweijiegou。chulejuyoulianghaodelixuexingnengwai，haijuyoulianghaodezonghengxiangpaishuixingneng

、延伸性能、滲透性能和過濾性能及較高的耐酸堿
、耐老化等良好的化學性能。