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Qinghai-Tibet railway passenger cars

Release time:  2018-12-17

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????? They’re equipped with special oxygen supply system.

????? They are characterized by environmentally sound design; “ zero discharge” has been achieved for the first time in China.

????? They are equipped with anti-ultraviolet, anti-sand blown by wind, and anti-lightning systems.

????? They have good leak tightness.

????? They are equipped with special windows adapting to air pressure variation.



免费看成人AAAAA片视频_国产精品秘 一区二区三区高潮_高潮毛片又色又爽免费_91狠狠色综合久久久夜色撩人_91亚洲国产AⅤ精品一区二区