Hong Kong stocks in the non-ferrous metals sector opened higher, with China Nonferrous Mining (01258.HK) and Minmetals Resources (01208.HK) rising more than 4%, Aluminum Corporation of China (02600.HK) rising more than 2%, and Luoyang Molybdenum (03993.HK) and Zijin Minerals International (02259.HK) following suit.