What are the above companies of Yunnan Jiantou Fourteen Construction Co., Ltd.?

What are the companies above Yunnan Jiantou Group? There are former Yunnan Construction Engineering Group Co., Ltd., 14th Metallurgical Construction Group Co., Ltd. and Southwest Traffic Construction Group Co., Ltd..

Because Yunnan Jiantou Group is 20 16 formed by the integration and reorganization of three provincial state-owned enterprises: Yunnan Construction Engineering Group Co., Ltd., 14th Metallurgical Construction Group Co., Ltd. and Southwest Communications Construction Group Co., Ltd..

Yunnan province, called Yun or Dian for short, is the capital of Kunming.