亚洲人成网站18禁止中文字幕,国产毛片视频在线看,韩国18禁无码免费网站,国产一级无码视频,偷拍精品视频一区二区三区,国产亚洲成年网址在线观看,国产一区av在线

Train inspection and garage repair workers from the Urumqi Railway Administration installed polyvinyl chloride crystal glass on passenger train windows to protect them from fierce gusts of wind.

It is said the new crystal glass made of polyvinyl chloride will prevent windows from breaking into pieces and is acid and alkali-resistant.

Trains running in the Xinjiang Uygur Autonomous Region constantly suffer strong wind assaults with sand and stones. Trains and passengers may be in danger if the windows break.

The other side of the train will not be put up with the new glass material. It is left clear for passengers to escape in case of accidents.

The crystal glass made of polyvinyl chloride is soft and transparent. It is difficult to break into pieces and resists acid and alkali.

Train windows are protected by the wind shells.

Workers put up polyvinyl chloride crystal glass on the windows of the trains.

(CRI March 30, 2007)