亚洲精品1234,久久久久亚洲国产,最新久久免费视频,我要看一级黄,久久久性色精品国产免费观看,中文字幕久久一区二区三区,久草中文网

US EUROPE AFRICA ASIA 中文
China / Society

Antiriot device earns national patent for Jilin farmer

(chinadaily.com.cn) Updated: 2015-04-20 19:22
Antiriot device earns national patent for Jilin farmer

Xi works on his invention in his workshop. He was born into a farming family but has been interested in all kinds of machinery since he was eight years old. He now has national patents for about ten inventions. [Photo/IC]

Highlights
Hot Topics
...