吉林省东丰县农业机械修造厂全体革命职工,遵照毛主席大力发展养猪事业的伟大指示,组成以老工人为主体的三结合试制小组,在厂小设备差、一无图纸、二无技术资料的情况下,高举革命大批判旗帜,发扬敢想敢干的革命精神,经过八十多次试验改进,试制成功东风70—1型青干两用饲料粉碎机,受到了广大贫 Jilin Province Dongfeng County Agricultural Machinery Repair Factory all the revolutionary workers, in accordance with Chairman Mao vigorously develop the great cause of pig breeding, the composition of the old workers as the main body of the three combined trial group, small plant equipment, a drawing, two non-technical information In the circumstances, holding high the revolutionary banner of criticism and carry forward the courage to dare to do the revolutionary spirit, after more than 80 trials to improve the successful trial Dongfeng 70-1 dry and dry feed mill, by the vast majority of poor