DW series dej lubricated roj-dawb ntsia hlau tshuab
Kev kawm tus kheej, pib thiab nres ntse
Tshawb xyuas qhov kub thiab txias ntawm ib puag ncig kom tiv thaiv kev kub ntxhov siab uas tshwm sim los ntawm qhov kub thiab txias ntau dhau;
Tshawb xyuas qhov kawg ntawm cov khoom siv tom qab ua tiav kom tiv thaiv tau qhov sib txawv ntawm cov cua compressed kom tsis txhob siab dhau thiab nkim hluav taws xob;
Tshawb xyuas qhov kub ntawm lub cev muaj zog thiab tiv thaiv lub cev muaj zog
