Imashini ya Changsha Haochang (HC Enginepart) ni uruganda rukorera mu Bushinwa kandi rwohereza ibicuruzwa mu mahanga bisimbuza impeta za piston kuri MAN B&W ifite moteri ebyiri zifite umuvuduko muke wa moteri ya mazutu ya mazutu, harimo MC-C na ME-C. HC ikora impeta ya piston uhereye kubitegererezo byabakiriya cyangwa ibishushanyo, hamwe na diameter kuva kuri φ30 kugeza 800 mm - ikubiyemo moderi ya MAN B&W nka S50MC-C (500 mm bore), S60MC-C (600 mm), S70ME-C (700 mm), na S80ME-C (800 mm). Impeta zose za piston zakozwe muburyo bwa OE munsi ya sisitemu yubuziranenge ya ISO 9001: 2015. Izi moteri zikora nka moteri nyamukuru kumato manini ya kontineri, abatwara ibintu byinshi, na tanker.