1.Ib qho khoom hloov kho tshiab ntawm QT457 qag, nrog cov zis torque 42000Nm nce 5% dua QT 457 qag;
2.Siv tshwj xeeb vaj tse steel daim hlau kom tau raws li lub peev xwm thauj khoom siab thiab kev ntseeg siab, thiab paub txog lub teeb yuag;
3.Adopting sib txawv tsim ntawm bearings los txhim kho bearing tag nrho lub neej, optimize nruab nrab qag cab kuj qauv, thiab txhim khu lub lubricating khoom;
4.Applied rau txoj kev nyuaj tsheb, uas muaj peev xwm yuav nruab nrog inter-wheel sib txawv locks thiab active lubrication pab kiag li lawm los xyuas kom meej qhov kev cia siab ntawm tag nrho cov qag;
5.Adopting txij nkawm-dawb hub bearing units kom paub txij nkawm-dawb hub nyob rau hauv 500,000 km;
6.Oil pauv mileage ntawm 100,000 km, uas tuaj yeem txuag nqi txij nkawm.