BRIEF-Lock-Up Period For Gansu Jingyuan Coal's 726.3 Million Shares To End, Trading To Start On May 24

May 21 (Reuters) - Gansu Jingyuan Coal Industry and Electricity Power Co Ltd:

* SAYS LOCK-UP PERIOD OF 726.3 MILLION SHARES TO END, TRADING TO START ON MAY 24 Source text in Chinese: https://bit.ly/2VEiFlJ Further company coverage: (Reporting by Hong Kong newsroom)