国产彩扩设备经过近２０年的发展 ,从早期的彩扩放大机改造的简易彩扩机到今天广泛流行的电脑控制正像显示大幅面彩扩机 ,其进步是非常巨大的。目前国产彩扩设备已占国内市场份额的８０%左右 ,虽然国内大中城市以及大部分县城的彩照冲印业已日趋饱和 ,然而绝大部分的小城镇还是 After nearly 20 years of development, the domestic color-expanding equipment has made tremendous progress from the simple color enlarging machine transformed by the early large-scale color enlarging machine to the widespread computer control today just like the large-format color enlarging machine. At present, the domestic color-expanding equipment has accounted for about 80% of the domestic market share. Although the color photo-printing industry in large and medium-sized cities in China and in most of the county towns has become increasingly saturated, most small towns are still