Urgent, what is the relationship between State Grid Energy Hefeng Coal and Electricity Co., Ltd. and Shenhua Guoneng Hefeng Coal and Electricity Co., Ltd. Thank you.

Hefeng Coal and Electricity Company was originally a subordinate unit of Luneng, named Hefeng Luneng Coal and Electricity Development Company. Later, it was assigned to the State Grid Energy Company under the State Grid, known as State Grid Energy Hefeng Coal and Electricity Co., Ltd., and later to the National Energy Company under Shenhua Group, known as Shenhua Guoneng Hefeng Coal and Electricity Co., Ltd.