International tin prices continue to rise and tight supply in global tin market still provides support to tin prices;
China's financial market is superficially prosperous; the real economy is hard to be boosted; the influx of hot money squeezes the real economy;
The environmental protection inspection in China is gradually normalized; tin smelting enterprises witness increasingly unsteady production; the reopening of Chinese tin mines has faltered.
The grade of tin raw ore from Burma decreases gradually and no new sources have been discovered, leading to an increasingly scarce supply.