四新技术国产ＧＫ２７０密炼机上辅机社会效益显著四川橡胶厂“国产ＧＫ２７０密炼机上辅机投人使用一年以来．其运行效果达到了预期的目的．对川播的经济发展起到了较好的推动作用，产生了较为可观的经济效益和社会效益．该厂在继“七五”一期技改项目完成后，又投资１８... The new technology domestic GK270 mixer has a significant social benefit on the auxiliary machine. The Sichuan GK 270 mixer has been used for one year since the auxiliary machine was put into use. The operation effect has reached the desired goal. It has played a better role in the economic development of the Sichuan Broadcasting. The promotion has produced considerable economic and social benefits. After the first phase of the “7th Five-Year Plan” technology reform project, the plant invested 18 more...