一、传统印刷技术的发展平版胶印印刷和凸版印刷在过去的几十年里，特别是平版胶印印刷一直占据着我国印刷行业的主导地位。五六十年代，国家经济处于落后状态，人民生活水平只能达到温饱，那时人们对商品包装还没有过高要求，那个时期的印刷厂主要是以凸印、铅印为主，设... First, the development of traditional printing technology Offset offset printing and letterpress In the past few decades, especially lithographic offset printing has been occupying the leading position in China’s printing industry. In the fifties and sixties, the state economy was in a backward state, and the people’s living standards only reached the limit of food and clothing. At that time, people did not have too much demand for the packaging of goods. At that time, the printing factories mainly used letterpress printing and lead printing as main ...