Researched and manufactured by assimilating German, Japanese and Formosan technology, machines of this type controlled by micro-computer are equipped with automatic warp transmission unit, automatic broken weft detector and change-speed clutch compensation device. Oil-pump can supply oil automatically and is also equipped with off-oil protecting unit. Woven bags are applied to pack cement, fertilizer, rice, flour, vegetables and other light products. These machines have many traits such as convenience in maintenance, high output, especially non-oil rolling shuttle type which can reduce energy consumption by 30% and can also make woven bags without oil pollution easy to coat and print