Cov Lus Qhia Qhov Kawg Rau Kev Siv Cov Screws
Dab tsi yog pob zeb screws? Qhob screws, tseem hu ua masonry screws, yog tshwj xeeb tsim fasteners siv los ruaj cov khoom rau pob zeb, cib, los yog thaiv. Cov ntsia hlau no yog tsim los nrog cov lus qhia ntse, tapered uas txiav tau yooj yim los ntawm qhov nyuaj ntawm pob zeb ...
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