創業板指跌超3%，深成指跌2.3%，滬指跌1.6%。稀土永磁、鹽湖提鋰、算力租賃板塊跌幅居前。富時中國A50指數期貨擴大跌幅，現跌超3%。

A-share CPO sector opened sharply lower in early trade; Lihexing fell more than 8%, Taichenguang dropped over 7%, Tonghui Electronics declined about 6%, and Luxshare Precision and Changyingtong were down more than 4%.

In July the US proposed copper tariffs, applying 50% duties to semi-processed copper while refined copper was temporarily exempt but slated for phased tariffs beginning in 2027. The US Commerce Department must deliver its Section 232 report by June 30, when a final decision could be made. As the deadline approaches, AI compute-related metals markets face renewed volatility. Goldman Sachs and other banks warn a new tariff could trigger large-scale US buyer stockpiling. COMEX copper inventories have topped 650,000 tonnes, a record high. Supply tightness for small metals closely tied to AI compute — tungsten, tin, tantalum and indium — could worsen if measures are implemented.