TAB SIS THUAM KHAWV COOB LOS TUA HLUB
1. Cov khoom lag luam tshwj xeeb yog los ntawm 2-3 / 8 txog "20 ″, thiab qib steel yog los ntawm J55 txog Q125, npog tag nrho cov qauv thiab cov qib hlau.
2. Peb siv cov khoom siv raw yog txhua tus los ntawm kev lag luam loj thiab cov khoom lag luam zoo hauv tshuab steel.
3. Txhua qhov khoom yuav raug kuaj xyuas nruj me ntsis hauv cov txheej txheem ntau lawm.
Sau koj cov lus ntawm no thiab xa rau peb