Aluminium and copper maker Hindalco reported a 9.6 per cent decline in profit at Rs 640 crore but beat Street expectations of Rs 494 crore. In an interview to NDTV Profit, Debu Bhattacharya, managing director, Hindalco said that copper has delivered a good performance on the back of good treatment charges and refining charges (TC/RC). "The aluminum LME (London Metal Exchange) has reached a kind of equilibrium stage. Copper production and better product mix is satisfactory," he added.