上海重型汽车厂于1958年生产出4吨交通牌载重汽车,开始了上海能独立制造货车的历史。经多年发展,由于资金、设备、技术等多方面原因,4吨交通牌货车一般年产量都在2000辆左右,生产规模很难有较大突破。与长春“一汽”相比,人家只采用一周时间,即能 Shanghai Heavy-Duty Truck Factory produced 4 tons of traffic-licensing trucks in 1958 and began the history of Shanghai’s ability to independently manufacture trucks. After many years of development, due to various reasons such as capital, equipment, and technology, the annual output of 4 tons of transportation brand trucks is generally around 2,000, and it is difficult to have a big breakthrough in production scale. Compared with Changchun FAW, people only use one week, that is,