Monga m'modzi mwa otsogola opanga ndi ogulitsa ma pistons 8 ku China, tikukulandirani ndi manja awiri kuti mukhale ndi ma pistons apamwamba kwambiri-grade 8 opangidwa ku China kuno kuchokera kufakitale yathu. Zogulitsa zonse zosinthidwa makonda ndizopamwamba kwambiri komanso mtengo wampikisano.