ɪn ˈeɪpɹəl tˈuː θˈaʊzənd sˈɛvəntˌiːn, ˈoʊɪŋ tə pɚɹˈuːz ɪŋkɹˈiːsɪŋ ɪmpˈoːɹtəns æz ɐ kˈɑːpɚ səplˈaɪɚ tə tʃˈaɪnə, tʃaɪnˈælkoʊ ɐnˈaʊnst ɐn ɪnvˈɛstmənt ʌv dˈɑːlɚ wˈʌn.θɹˈiː bˈɪliən tʊ ɛkspˈænd kˈɑːpɚ pɹədˈʌkʃən ˈæftɚ fˈeɪlɪŋ tə ɹˈiːtʃ ɪts ˈaʊtpʊt tˈɑːɹɡɪt lˈæst jˈɪɹ.
In April 2017, owing to Peru's increasing importance as a copper supplier to China, Chinalco announced an investment of $1.3 billion to expand copper production after failing to reach its output target last year.