YIJIANG bụ ọkachamara n'ichepụta akụkụ ụgbọ ala mkpofu maka MOROOKA, gụnyere track roller ma ọ bụ ala ala, sprocket, roller top, idler front na track roba. Egwu rọba dakọtara na ụdị Morooka gụnyere MST300, MST600, MST800, MST1500, MST2200, na MST3000, wdg.