Lub bevel iav of elevator muaj ntau yam haujlwm, xws li nqa, txo qis, thawb nrog kev pab cuam ntawm qhov chaw, tig rov qab thiab ntau yam kev hloov qhov siab.Nws muaj cov yam ntxwv ntawm kev ua haujlwm siab, qhov tseeb qhov chaw, kev tswj yam tsawg kawg nkaus hauv 0.03mm, ceev l ...
Nyeem ntxiv