HC o loʻo i totonu o le aai o Changsha, itumalo o Hunan, O oloa autu e aofia ai CRANKSHAFT, CYLINDER HEAD, CYLINDER BLOCK, PISTON, PISTONG RING, CYLINDER LINER, BEARING. O oloa o loʻo faʻaaogaina i le gataifale, locomotive, generator, masini faufale, loli mamafa, pasi ma isi taavale faʻapisinisi. O le faʻataʻitaʻiga afi e ufiufi CUMMINS, CATTERPILAR, DETROIT, VOLVO, MERCEDES-BENZ, MAN, DAF ma isi, atinaʻe e pei o ata faʻatau poʻo faʻataʻitaʻiga o lo tatou avanoa. O lea ua manuia le auina atu i fafo o oloa i le silia ma le 30 atunuu