1. Kampani ya Yijiang imagwira ntchito yopanga ma roller a Morooka kwa zaka 18. Ma rollers apangidwa mwapamwamba kwambiri;
2. Tikhoza kupereka mbali za Morooka chassis, kuphatikizapo track bottom roller, front idler, sprocket, .top roller ndi rabara / chitsulo;
3. Zogulitsa zathu zimatumizidwa ku Ulaya ndi USA, ndipo khalidweli ladziwika bwino ndi makasitomala