Reverse-engineering of the RPG-7 began in the early 1960s, and demonstrations were made to senior PLA officials in 1964.
ɹᵻvˈɜːsˌɛndʒɪnˈɪɹɪŋ ʌvðɪ ˌɑːɹpˌiːdʒˈiː sˈɛvən bɪɡˈæn ɪnðɪ ˈɜːli nˈaɪntiːnhˈʌndɹɪd sˈɪksti z, ænd dˌɛmənstɹˈeɪʃənz wɜː mˌeɪd tə sˈiːnjɚ pˌiːˌɛlˈeɪ əfˈɪʃəlz ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti fˈoːɹ.