In Sichuan, the formally refitting of CNG vehicles began in 1992, a CNG steel cylinder being installed on the vehicle.
四川省从1992年开始正式改装cng汽车，在汽车上安装钢质cng储气瓶。
In Sichuan, the formally refitting of CNG vehicles began in 1992, a CNG steel cylinder being installed on the vehicle.
四川省从1992年开始正式改装cng汽车，在汽车上安装钢质cng储气瓶。
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