ʻO Yangdong Co., Ltd., he lālā o Kina ʻO YITUO Group Co., Ltd., he hui hui pū ʻia i ka noiʻi a me ka hoʻomohala ʻana i nā ʻenekini diesel a me nā hana ʻāpana kaʻa, a me kahi ʻoihana ʻenehana kiʻekiʻe.
I ka makahiki 1984, ua hoʻomohala maikaʻi ka hui i ka mīkini diesel mua 480 no nā kaʻa ma Kina.Ma hope o 20 mau makahiki o ka hoʻomohala ʻana, ʻo ia kekahi o ka nui o ka multi cylinder diesel engine production base me nā ʻano like ʻole, nā kikoʻī a me ka nui ma Kina.Hiki iā ia ke hana i 300000 multi cylinder diesel engines i kēlā me kēia makahiki.ʻOi aku ma mua o 20 mau ʻano o nā ʻenekini diesel multi cylinder, me ka cylinder diameter o 80-110mm, displacement o 1.3-4.3l a me ka uhi mana o 10-150kw.Ua hoʻopau maikaʻi mākou i ka noiʻi a me ka hoʻomohala ʻana i nā huahana mīkini diesel e hoʻokō i nā koi o ka Euro III a me ka Euro IV emission regulation, a loaʻa iā mākou nā kuleana waiwai naʻauao kūʻokoʻa.Lift diesel engine me ka mana ikaika, ka hana hilinaʻi, hoʻokele waiwai a me ka lōʻihi, haʻahaʻa haʻahaʻa haʻahaʻa a me ka haʻahaʻa walaʻau, ua lilo i ka mana makemake no nā mea kūʻai aku he nui.
Ua hala ka hui i ka ISO9001 international quality system certification a me ISO / TS16949 quality system certification.Ua loaʻa i ka mīkini pahu liʻiliʻi liʻiliʻi i ka palapala hoʻokuʻu i ka maikaʻi o ka huahana ʻāina, a ua loaʻa i kekahi mau huahana ka palapala EPA II o ʻAmelika Hui Pū ʻIa.