改革开放以来,国民经济持续稳定的高速发展,加上国家对进口焊机征收较高关税的保护作用,电焊机行业得到了较大的发展。从八十年代开始引进国外先进技术及国外产品进入国内市场,推动了电焊机行业的技术发展,提高了行业产品的技术水平,因而电焊机的产品结构发生了明显的变化。突出的是高效节能焊机,不但数量增大,构成比的所占 Since the reform and opening up, the sustained, steady and rapid development of the national economy, coupled with the state’s protection of higher tariffs on imported welding machines, has seen a great development in the welding machine industry. From the eighties onwards, the introduction of foreign advanced technology and foreign products into the domestic market, promote the welding machine industry, technological development, improve the technical level of industry products, and product structure of the welding machine has undergone significant changes. Prominent is energy-efficient energy-saving welder, not only increased the number of constituent ratio