Ẹrọ ẹrọ Changsha Haochang (HC Enginepart) jẹ olupilẹṣẹ ti o da lori Ilu China ati atajasita ti awọn oruka piston aropo fun MAN B&W awọn ẹrọ diesel kekere ti ori kekere-ọpọlọ meji, pẹlu MC-C ati jara ME-C. HC ṣe agbekalẹ awọn oruka piston lati awọn ayẹwo alabara tabi awọn iyaworan, pẹlu agbegbe iwọn ila opin lati φ30 si 800 mm - yika awọn awoṣe MAN B&W gẹgẹbi S50MC-C (500 mm bore), S60MC-C (600 mm), S70ME-C (700 mm), ati S80ME-C (800 mm). Gbogbo awọn oruka piston ni a ṣe si awọn pato OE labẹ ISO 9001: 2015 didara eto. Awọn enjini wọnyi ṣiṣẹ bi idasi akọkọ lori awọn ọkọ oju omi eiyan nla, awọn arukọ nla, ati awọn ọkọ oju omi.