党的十一届三中全会以来，以经济建设为中心的各项政策相继出台，改革开放步步深入，极大地促进了我国经济的稳定高速发展。也给工程建设机械行业的发展带来了新的机遇。“七五”以来，工程建设机械行业的专业化生产发展很快。随着市场经济的发展，全国有明个省市区工程机械行 Since the Third Plenary Session of the Eleventh Central Committee of the Communist Party of China, various policies centered on economic construction have been successively introduced, and reforms and opening up have deepened, which has greatly promoted the stable and rapid development of China’s economy. It also brings new opportunities for the development of the construction machinery industry. Since the “July 5th”, the specialized production of the engineering construction machinery industry has developed rapidly. With the development of the market economy, there is a nationwide municipal engineering machinery line