tʃaɪnˈælkoʊ ɪz pɹˈɪnsɪpəli ɛŋɡˈeɪdʒd ɪnðɪ ɛkstɹˈækʃən ʌv ˌæljʊmˈɪniəm ˈɑːksaɪd, ᵻlɛktɹˈɑːləsˌɪs ʌv vˈɜːdʒɪn ˌæljʊmˈɪniəm ænd ðə pɹˈɑːsɛsɪŋ ænd pɹədˈʌkʃən ʌv ˌæljʊmˈɪniəm æz wˈɛl æz tɹˈeɪdᵻd tɹˈeɪdɪŋ ænd ˌɛndʒɪnˈɪɹɪŋ ænd tˈɛknɪkəl sˈɜːvɪsᵻz.
Chinalco is principally engaged in the extraction of aluminium oxide, electrolysis of virgin aluminium and the processing and production of aluminium as well as traded trading and engineering and technical services.