目前我国大型工程的承包企业一般采用比价采购方式购买大宗设备及零配件，国家重点建设项目的设备采购则大多采用招投标方式进行。这两种采购方式对于我们了解同种设备不同品牌机型的性能质量的优劣及价格的高低，从而用有限的资金采购到足够的适用设备无疑是很有好处的。但是 At present, contractors in China’s large-scale projects generally use parity purchase to purchase bulk equipment and spare parts, and equipment procurement for major national construction projects are mostly conducted through bidding. These two kinds of procurement methods are undoubtedly very good for us to understand the advantages and disadvantages of different models of the same kind of equipment and the price level, so that it can be very beneficial to purchase enough suitable equipment with limited funds. but