Jingyuan Coal Industry Group Liuhua Chemical Co., Ltd. Jingyuan Coal And Electric Clean And Efficient Gas Comprehensive Utilization (Relocation And Renovation) Phase Ii Project Of Jingyuan Coal And Electricity Clean And Efficient Gas Procurement (Second Batch) Tender Announcement For Procurement Of Pipelines, Pipe Fittings, Flanges And Valves In The Plane (Second Batch)