SHANGHAI, Jan. 18 (SMM) – Spot tin trading stayed light on Tuesday in Shanghai, with mainstream traded prices of RMB 170,000-171,500/mt. Market supply remained quite tight. Tin futures to be delivered after the Chinese New Year were quoted below RMB 170,000/mt. Purchases were rarely seen, however, according to traders. Tin prices at the moment see little volatility given low buying interest downstream ahead of the Chinese New Year.