The price of copper has slowed down its increase Tuesday morning.

The December futures price for copper at COMEX stock exchange rose by 0.3 percent to $4.2927 per UK pound, continuing Monday's trend. But several minutes ago, the price increased to $4.2983.

The price of aluminum at London Stock Exchange fell by 1.95 percent to $2883.5, and that of zinc—by 1.95 percent to $3067.5 per ton.