In the world market, copper has broken 3.87 level, which was the medium term crucial support. Copper was trading lower at 3.77 level last night. It was the level from where copper was taking support from four times. Due to high price of U.S. dollar in rupee copper was trading around 405 levels, and 388 is the crucial support for Indian market. Copper may take support from 3.68 level in the world market. Sell on the rise advised in copper for short to medium term.