AUTHOR=Xi Xian , Zhong Weiqiong , Zheng Huiling TITLE=Evolution and sustainability analysis of global tungsten trade pattern from the perspective of industry chain JOURNAL=Frontiers in Earth Science VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2024.1484061 DOI=10.3389/feart.2024.1484061 ISSN=2296-6463