柳州市瑞和塑料科技有限责任公司自主研发出预应力混凝土桥梁用聚丙烯新型塑料波纹管,该产品是高科技专利产品(ZL200620175029.4、ZL200720083753.9),具有耐高温、高强度、高韧性、耐压、耐腐蚀、质 Liuzhou Ruihe Plastic Science and Technology Co., Ltd. independently developed a new pre-stressed concrete bridge polypropylene plastic bellows, the product is a high-tech patent products (ZL200620175029.4, ZL200720083753.9), with high temperature, high strength, high toughness , Pressure, corrosion-resistant, quality