一、通用机械制造业概述通用机械制造业包括泵、风机、压缩机、阀门、气体分离及液化设备、真空获得及应用设备、过滤及分离机械、减变速机、干燥设备等九个行业。通用机械制造业量大面广,产品应用领域广、品种规格多、企业数量多。近几年,在国家实施的促进中国经济腾飞的一系 I. General machinery manufacturing industry General machinery manufacturing industry includes pumps, fans, compressors, valves, gas separation and liquefaction equipment, vacuum access and application of equipment, filtration and separation machinery, reducer, drying equipment and other nine industries. General machinery manufacturing industry, a wide range of products, wide range of product applications, product specifications and more, a large number of enterprises. In recent years, the implementation of the national economy in China to promote a series of