据阿拉伯卫星电视台：美伊谈判现场即将召开新闻发布会。

Following a June 18 memorandum of understanding, technical-level U.S.-Iran talks are scheduled in Switzerland on June 21, Pakistan said on June 20. Iran’s negotiating team has arrived in Switzerland and the U.S. vice president has departed to attend. On June 20 Iran’s military announced it was closing the Strait of Hormuz, citing U.S. failure to restrain Israel and alleged breaches of the MoU; the U.S. military said it had not detected any Iranian actions to close the waterway. President Trump on June 20 issued guidance on charging transit fees for passage through the strait.

CITIC Securities research says demand for high‑end zirconia in China should rise as solid‑state battery supply chains accelerate, SOFCs expand rapidly, electronic‑grade bioceramics grow and nuclear power enters a recovery cycle. Yttria (yttrium oxide), the key stabilizer for zirconia, faces constrained rare‑earth supply after output from Japanese suppliers including Tosoh and First Rare Element Chemical fell sharply, supporting expectations that Chinese producers will gain significant share of the global high‑end zirconia market. Zirconium oxychloride feedstock prices are up about 30% since the start of the year and downstream zirconia prices have risen roughly 30% YTD. Electronic‑grade high‑purity nano‑zirconia is quoted at $50–65.7/kg and yttria‑stabilized zirconia (YSZ) high‑end powders at $50–150/kg. Domestic high‑end zirconia market is seeing simultaneous volume and price increases.