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Models present Vivo X21 smartphones during the launching event in Vientiane, Laos, June 17, 2018. Chinese smartphone maker Vivo introduced its X21 smartphone into the market of Laos in Vientiane on Sunday. (Xinhua/Liu Ailun)?
Models present Vivo X21 smartphones during the launching event in Vientiane, Laos, June 17, 2018. Chinese smartphone maker Vivo introduced its X21 smartphone into the market of Laos in Vientiane on Sunday. (Xinhua/Liu Ailun)?