Copper ended up for a second consecutive day on Monday, and tin prices notched a new record high as supply-side constraints reinforced a bullish outlook for both metals. New York, copper prices regained their composure late last week in anticipation of robust Chinese demand prospects, even as fears of tighter monetary policies there remained. COMEX March copper added 3.95 cents to settle at $4.3485 per lb, after dealing between $4.3090 and $4.3725.