跟踪研究结果表明,作为生产资料的商用车尤其是专用汽车和半挂车,与国民经济发展息息相关;作为反映国民经济发展状况的重要指标——国内生产总值(GDP)的增速之起伏,也相应地影响到商用车市场。GDP增速又与国家宏观经济政策走向密切相关,国家财政与货币政策一旦收紧,GDP增速就会放缓;一旦放松 The results of the follow-up study show that commercial vehicles, especially special purpose vehicles and semi-trailers, as means of production are closely related to the development of the national economy. As an important indicator reflecting the development of the national economy, the ups and downs of the growth of gross domestic product Correspondingly affect the commercial vehicle market. GDP growth is closely related to the trend of national macroeconomic policies. Once the national fiscal and monetary policies are tightened, the GDP growth rate will slow down. Once it is relaxed