Lus piav qhia luv luv:
Kev piav qhia ntawm cov khoom 1.Nrog Txawb tswj vaj huam sib luag.2.Steel-welded tsim ncej.3.shafts yog hardened nrog tshwj xeeb steel khoom.4.Rollers yog tshwj xeeb steel khoom hardened thiab grounded.5.Gears Milled nrog tag nrho cov khoom.6.Top yob hydraulic movable.7.Nrog hydraulic lub cev muaj zog.8.Ib tus qauv ua ke nrog cov menyuam.9. Kab rov tav thiab ntsug ua haujlwm.