HC dị na obodo Changsha, mpaghara Hunan, ngwaahịa ndị bụ isi gụnyere CRANKSHAFT, CYLINDER HEAD, CYLINDER BLOCK, PISTON, PISTONG RING, CYLINDER LINER, BEARING. A na-eji ngwaahịa a na mmiri, locomotive, generator, igwe ihe owuwu, gwongworo dị arọ, ụgbọ ala wdg ụgbọ ala azụmahịa. Ihe nlere nke engine na-ekpuchi CUMMINS, CATTERPILAR, DETROIT, Volvo, MERCEDES-BENZ, MAN, DAF wdg, mmepe dị ka ịbịaru ndị ahịa ma ọ bụ ihe nlele bụ uru anyị. Ugbu a ebupụla ngwaahịa nke ọma n'ihe karịrị mba 30