O le tulaga lelei ua matua fa'amaonia ma le fa'amalosia o le va'ava'aiga.E iai a matou mafutaga lelei ma kamupani sili i pisinisi, e pei o le Wuxi power, Yuchai machinery, Dongfeng Cummins, Xi'an Cummins, Chongqing Cummins, German Benz(MTU), British Perkins, Sweden VOLVO, Swedish Scania, Shangchai, Tellhow Technology. , Jiangsu Hengtong, Shanghai Qianneng, Shanghai Kaixun, Shanghai Marathon, Kangfu Saienisi ma Tekinolosi (le uluai afi afi tolu), Saina Sinotruk, Shanghai Fu Chuang ma isi.Ina ia faʻamautinoa le tuʻuina atu ma le manaʻoga o oloa i le taimi, ia tausisia le aitalafu, e mafai e itu uma e lua ona faʻataunuʻuina a latou aia tatau ma matafaioi e tusa ai ma le konekarate, faʻasoa faʻamanuiaga ma lamatiaga, e le gata ina tausia le tau o oloa, ae faʻamautinoa foi le lelei o oloa, ma tu'uina atu 'au'aunaga a tagata ta'ito'atasi, 'au'aunaga fa'apitoa, 'au'aunaga totogi, ina ia ausia se sini manumalo-manumalo.