SHANGHAI, Dec. 28 (SMM) -- The latest economic data from the US were mixed, weighing on market. Concern over possible financial crisis in the Europe and economic slowdown in China continue to weigh on market sentiment. SMM expects that LME tin prices will continue to fluctuate and will test sustainability at USD 19,000/mt. In domestic tin spot market, it is expected that spot tin prices will remain stable between RMB 158,000-159,500/mt on Wednesday.