Cov hlau purlins yog siv rau kev txhawb nqa cov qauv hauv cov tsev. Feem ntau, purlins yog cov khoom tseem ceeb ntawm cov qauv ru tsev. Cov ru tsev purlins yog txhawb nqa los ntawm rafters lossis phab ntsa tsev thiab lub ru tsev deck yog pw saum cov purlins.
A: Yog, rau qhov ntau thiab tsawg ib txwm muaj qauv dawb tab sis tus neeg yuav khoom yuav tsum tau them tus nqi thauj khoom.
A: Yog. Thov koj xav tiv tauj peb kom paub meej ntxiv.
A: Peb cov txheej txheem them nyiaj ib txwm yog T / T, L / C, D / A, D / P, Western Union, MoneyGram, cov txheej txheem them nyiaj tuaj yeem sib tham thiab kho nrog cov neeg siv khoom.
A: Yog peb lees txais kiag li.
A: Txhua daim khoom yog tsim los ntawm cov chaw ua haujlwm tau ntawv pov thawj, tshuaj xyuas ib daim zuj zus raws li tus qauv QA/QC hauv tebchaws. Peb kuj tuaj yeem muab daim ntawv pov thawj rau cov neeg siv khoom kom lav qhov zoo.
A: Zoo siab txais tos. Thaum peb tau koj lub sijhawm teem tseg, peb yuav npaj pab pawg muag khoom kom ua raws li koj cov ntaub ntawv.