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2009年6月,北清机械展示了采用瑞士保佳秀灵公司技术的BQJ5140TSLD扫路车和据称国内首创的喷雾式空气净化专用车,两车都是在东风底盘基础上改装的。
In June 2009, Beiqing Machinery displayed the BQJ5140TSLD road sweeper with the technology of Swiss Baojia Xiuling Company and purportedly domestic pioneer spray-type air purifying special vehicle, both of which were converted on the basis of Dongfeng Chassis.