精品处破在线播放,亚洲高清无码黄免费,欧美视频一区二区三区四区,欧美v亚洲v日韩v最新在线
From hand-written letters to 5G
0
Comment(s)
Print
E-mail
China.org.cn, September 27, 2019
視頻播放位置
下載安裝Flash播放器
.
Print
E-mail
Related
Go to Forum >>
0
Comment(s)
No comments.
Add your comments...
User Name
Required
Your Comment
Enter the words you see:
Racist, abusive and off-topic comments may be removed by the moderator.
Send your stories
Get more from China.org.cn
Mobile
RSS
Newsletter
From hand-written letters to 5G
In the 1950s, there were less than 300 thousand landline telephone subscribers. Today, as China embraces the 5G era, more upgrades in the means of communication are yet to be seen.
China.org.cn