Handan Zhengda Steel Pipe Co., Ltd. (" ZHENG DA PIPE" in Chinese for short, and " ZDP" in English for short) is one of the ten supported enterprises by the Handan city government, one of the top 100 enterprises in Hebei province, Leading Enterprise of Hebei Industrial Cluster, one of the top 500 manufacturers in China, one of the top 500 private enterprises in China