expansion piece造句

• On the basis of gongyi changmao supplying and draining of water materials company , sino - south korea joint venture , henan changmao yuanyi co . , ltd was founded in march , 2003 . it mainly produces rubber joint , vavle , expansion piece , shock absorer and relevant products
  中韩合资河南昌茂元一阀门有限公司是以巩义市昌茂给排水材料总厂为基础，于2000年3月成立。