... drafters of the industry standard of the disc harrow and share plough in China,which is China's outstanding agricultural expert, we ... mainly produce with the brand of Qingquan:disc harrow,disc plough,share plow, rotary tiller,potato planter,potato harvester,cultivator,subsoiler,seeder ... complete machines for each specification and 300,000 pcs of plough discs and harrow discs. They are exported to more ...