中国少妇无码专区_女人被黑人躁得好爽视频_亚洲男人天堂网站_精品无码日韩国产不卡AV_成人动漫入口_成人区人妻精品一区二区不卡视频

China's rapid growth of optical fiber users will surpass Japan and South Korea

China's optical fiber users are growing rapidly, accounting for more than Japan and South Korea. According to statistics, as of May 2016, the number of broadband access users in China had reached 273.75 million, and the population penetration rate of broadband access users in China was 20.4%. Considering the growth of ……