https://researchportal.hw.ac.uk/en/publications/a-study-on-permeability-of-chsub4sub-pre-adsorbed-yangquan-coal-m/
A study on permeability of CH4 pre-adsorbed Yangquan coal matrix-plug to CO2 and He -...
a studyand hepermeabilitypreyangquan
https://www.mapsof.net/yangquan-shi
Yangquan Shi - Geographic Facts & Maps - MapSof.net
Yangquan Shi detailed profile, population and facts
geographic factsyangquanshimaps
https://www.mysteel.net/daily-prices/7002348-pci-coal-prices-yangquan
PCI coal prices: Yangquan(May 06, 2026 09:17) | Mysteel
PCI coal prices: Yangquan(May 06, 2026 09:17), collected from the Mysteel team on the ground across China.
pcicoalpricesyangquanmay