Shanghai Metals Market (SMM) Rare Earth Oxides web pageTo keep up with rare earth prices and what's happening in China, including imports and exports to/from rest of world, including U.S., read
SMM Rare Earth Oxides web page daily.
Haven't seen any mention there of Ucore, its demo plant, or the supposedly forthcoming SMC1 in Louisiana. Nor of Rare Element Resources or Texas Mineral Resources. But if Ucore ever imports or exports anything in significant enough quantity to China, that might get mentioned in some articles. MP Materials' production and exports of rare earth concentrate to China do get mentioned from time to time.