HONG KONG, Jan. 13 -- Shares in Aluminum Corp. of China Ltd. Chalco) <2600.HK extended losses in the morning session on Wednesday after China raised bank reserve requirements.

The country's largest aluminium maker, Chalco was at HK$9.72, down 6.36 percent at 0413 GMT, while the benchmark Hang Seng Index .HSI was down 2.3 percent.