Group 1 - The core viewpoint indicates that the tin market is experiencing a tug-of-war between tight supply and loose expectations, leading to a short-term strong fluctuation in tin prices [1] - The main contract for tin closed at 265,530 yuan per ton, reflecting a slight increase of 0.69% [1] - The current trading performance in the spot market is relatively quiet, with only a few participants maintaining essential purchases due to strong observation sentiment from downstream [1] Group 2 - Tin ore supply remains tight, which is constraining production at smelting plants, with the combined operating rate in Yunnan and Jiangxi reaching 53.86% as of last Friday [1] - The operating rate of smelting enterprises in Yunnan has continued to decline, with the processing fee for 40% grade tin concentrate remaining at historical lows, nearing the cost line for smelting plants [1] - Some smelting enterprises have already halted production for maintenance, while others are gradually reducing output to cope with the current tight supply of raw materials [1] Group 3 - Thailand has decided to suspend the transportation of tin ore from Myanmar to Thailand starting June 4, which is expected to impact the monthly import of tin ore into China by 500-1,000 metal tons [2] - The ban on transportation is likely to exacerbate raw material supply concerns, although market sentiment may experience a short-term boost [2] - The demand from the semiconductor and photovoltaic sectors is slowing down, and the high prices are leading to reduced purchasing from downstream, indicating that tin prices may maintain a trend of rebound followed by consolidation [2]