Hluav Taws Qhov rai thav duab (qiv teeb)

Hluav Taws Qhov rai thav duab yog locked hollow hlau iav lub teeb thavab uas tsis txuas rau lub qhov rooj thav duab. Hluav Taws Qhov rai thav duab nrog qhov ntau kawg 3 / 4- teev ntsuas yuav tau muab raws li cov anufacturer cov npe. Cov neeg qhib cov iav tsis pub dhau 1296 square ntiv tes; Qhov ntev rau qhov dav lossis qhov siab yuav tsum tsis pub tshaj 54 ntiv tes. Hluav taws kub thav duab thav duab nrog {4}} kev ntsuas ntsuas ntsuas yam tsis muaj ib qho kev tsim khoom ntawm cov chaw tsim hluav taws tag nrho. Cov nplaim hluav taws kub hnyiab tau feem ntau yog siv hauv cov phab ntsa hauv txoj kev hauv tsev thiab tej zaum yuav tau muab rau Masonry lossis kev tsim kho ntub. Sab laj lub ncej manufcusent raws li muaj peev xwm muab cov nplaim hluav taws rau cov phab ntsa qhuav. Hluav Taws Qhov rai thav duab tej zaum yuav muab nrog cov iav wired tsis tsawg tshaj 1 / {}} nti tuab, lossis iav zoo li pom zoo los ntawm cov chaw sau npe.