Injin Changsha Haochang (HC Enginepart) masana'anta ne na kasar Sin kuma mai fitar da zoben piston na maye gurbin MAN B&W injunan dizal mai saurin bugun jini biyu, gami da jerin MC-C da ME-C. HC yana haɓaka zoben piston daga samfuran abokin ciniki ko zane, tare da ɗaukar hoto mai diamita daga φ30 zuwa 800 mm - ya ƙunshi samfuran MAN B&W kamar su S50MC-C (500 mm bore), S60MC-C (600 mm), S70ME-C (700 mm), da S80ME-C (800 mm). Ana samar da duk zoben piston zuwa ƙayyadaddun OE a ƙarƙashin tsarin ingancin ISO 9001: 2015. Waɗannan injunan suna aiki ne a matsayin babban abin tuƙi akan manyan jiragen ruwa na kwantena, masu ɗaukar kaya masu yawa, da tankunan ruwa.