COMEX copper is seen extending rebound on Tuesday morning in Asia following an over 5 % spike in the previous session amid a substantial rebound on Wall Street. The Nasdaq spiked 490.18 points or 2.2 percent to 22,694.61, the S&P 500 shot up 102.21 points or 1.6 percent to 6,654.72 and the Dow jumped 587.98 points or 1.3 percent to 46,067.58. Besides, easing US-China trade tensions as both sides expressed willingness to resume negotiations ahead of a possible meeting between President Donald Trump and Chinese President Xi Jinping later this month is also seen supportive for the counter. The red metal is currently quoting at $5.14 per pound.