0215 - China's 1970 Autumn Export Commodities Fair. On display at the fair ...Front

China's 1970 Autumn Export Commodities Fair. On display at the fair is a numerical-control vertical six-spindle turret jig drilling and boring machine of advanced standards which was made by the workers revolutionary cadres and revolutionary technicians of the Peking No. 3 Machine Tools Plant by applying Chairman Mao's brilliant philosophic thinking. With controllable silicon technique, it can be easily operated and attains high precision.