[SMM Tin Futures Brief Commentary: US Dollar Index Fluctuates at Highs, Suppressing Non-Ferrous Metal Prices; SHFE Tin Prices Jump Initially and Then Pull Back] The most-traded SHFE tin contract (SN2506) jumped initially and then pulled back today. In the morning session, it surged to 262,000 yuan/mt, buoyed by expectations of RRR cuts and interest rate cuts by the PBOC and the US-China economic and trade talks. However, it pulled back in the afternoon session due to uncertainties surrounding US tariff policies and a stronger US dollar, eventually closing at 261,480 yuan/mt, down slightly by 0.16% from the previous trading day. Total open interest in the night session declined slightly to 31,000 lots. Concerns Over the US Economy: Q1 GDP contracted by 0.3% QoQ, core PCE inflation rose to 3.5%, consumer confidence fell to a record low, and the manufacturing PMI pulled back to 48.7, indicating intensifying downward pressure on the economy. The US Fed kept interest rates unchanged, pushing back interest rate cut expectations to July. The US dollar index fluctuated at highs, suppressing the non-ferrous metal sector. On the demand side, solder companies' post-holiday orders remained stable but without significant increases. The US's electronic tariff policies on China suppressed downstream restocking expectations. Trading in the spot market was mediocre, with traders reporting low inquiry willingness. Spot transaction prices ranged from 260,500 to 262,500 yuan/mt. However, smelters held onto their prices and were reluctant to sell, with downstream companies primarily making just-in-time procurement, and low-priced supplies were favoured...