MLR的总工程师张洪涛说，发现矿床的省份包括东北的辽宁省，华北的河北省，华东的山东、安徽省，以及西南的四川省。
The deposits were discovered in provinces including northeastern Liaoning , northern Hebei , eastern Shandong and Anhui , and southwestern Sichuan , said Zhang Hongtao , MLR chief engineer .
张洪涛