SHANGHAI, Apr. 21 (SMM) – In Shanghai physical tin market, most transactions were between RMB 139,500-141,000/mt last week. Failure by LME tin to extend gains drove market players in China into a wait-and-see posture. A small amount of Yunxi brand tin traded at RMB 141,000/mt, while tin of other brands traded around RMB 140,000/mt. Some smelters in Yunnan and Jiangxi halted production for maintenance around the Qingming Festival, cutting availability of second- and third-tier brand tin. Goods in the market consisted largely of top brand tin from Yunnan. Secondary tin such as Weitai, Guangsheng and Green Southwest brands was seen in the market. Both supply and demand fell in tandem. Downstream producers bought only to need.