Yangdong Co., Ltd., e leng katlase ho China YITUO Group Co., Ltd., ke k'hamphani e kopaneng ea setoko e sebetsanang le lipatlisiso le nts'etsopele ea lienjineri tsa disele le tlhahiso ea likarolo tsa likoloi, hammoho le khoebo ea naha ea theknoloji e phahameng.
Ka 1984, khampani e atlehile ho hlahisa enjene ea pele ea 480 ea diesel bakeng sa likoloi tsa Chaena.Kamora lilemo tse fetang 20 tsa nts'etsopele, e se e le e 'ngoe ea metheo e meholo ka ho fetisisa ea tlhahiso ea enjene ea diesel e nang le mefuta e mengata, litlhaloso le boholo naheng ea China.E na le bokhoni ba ho hlahisa lienjineri tsa disele tse 300000 tse ngata ka selemo.Ho na le mefuta e fetang 20 ea lienjine tsa diesel tsa mantlha tse nang le licylinder tse bophara ba 80-110mm, phallo ea 1.3-4.3l le tšireletso ea matla ea 10-150kw.Re atlehile ho phethela lipatlisiso le nts'etsopele ea lihlahisoa tsa enjine ea diesel tse fihlelang litlhoko tsa melaoana ea tlhahiso ea Euro III le Euro IV, 'me re na le litokelo tse felletseng tse ikemetseng tsa thepa ea mahlale.Phahamisa enjene ea diesel e nang le matla a matla, ts'ebetso e tšepahalang, moruo le nako e telele, ho sisinyeha ho tlase le lerata le tlase, e fetohile matla a ratoang ho bareki ba bangata.
Khamphani e fetisitse setifikeiti sa tsamaiso ea boleng ba machaba ba ISO9001 le netefatso ea sistimi ea boleng ba ISO / TS16949.Enjene ea disele e nyane ea li-cylinder multi cylinder e fumane setifikeiti sa tokollo sa tlhahlobo ea boleng ba lihlahisoa tsa naha, 'me lihlahisoa tse ling li fumane lengolo la EPA II la United States.