London copper slipped on Tuesday but held above seven-week lows as a broadly weaker dollar offered support, while encouraging economic signals from China were offset by a looming slowdown in seasonal demand, Reuters reported. Three-month copper on the London Metal Exchange had edged down 0.4% to $4,647 a ton, erasing small gains from the previous session. Shanghai Futures Exchange copper also slipped by 0.4%, to 35,770 yuan ($5,539) a ton. Support for London copper around $4,625 was holding for a fourth session, a break of which could trigger a burst of chart-based sales. Prices last week struck the weakest since Feb. 26.
