China’s Export Curbs Trigger Yttrium Shortage Amid Rare Earth Concerns

The evidence provided by the primary sources strongly and consistently supports the statement that China's export curbs have caused a shortage of yttrium. The assessment is based on two key components of the statement:1. **Existence of Chinese Export Curbs:** This is firmly established by multiple high-authority sources. An analysis from the RUSI think tank explicitly mentions China's Ministry of Commerce's 'decision to implement controls on exports of rare-earth-related items'. This is further corroborated by analyses from the FDD think tank, legal experts at JDSupra, and industry news from ChemRadar, which even points to a specific government announcement. An academic working paper from NBER also analyzes the economic impact of such restrictions.2. **Causal Link to Yttrium Shortage:** Multiple sources directly connect these export curbs to a yttrium shortage. An exclusive report from Reuters, a highly credible news agency, is cited multiple times investigating the "brewing crisis of yttrium shortages caused by China's export controls." Another report from Asia Financial directly attributes the decline in global yttrium supplies to these restrictions. The Reuters social media post points to a 4,400% price increase for yttrium oxide in Europe, which is a powerful market indicator of a severe shortage. The NBER paper provides a data-driven, academic precedent for how these specific restrictions impact yttrium supply.Overall, the evidence is consistent across journalism, academic research, and policy think tanks. There are no contradictions among the sources provided. High-authority sources directly state the claim, and others provide strong corroborating evidence for both the cause (the policy) and the effect (the shortage).