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Kev sib txuas qhov chaw
Kev sib txuas yog cov hauv paus hniav, cov kav dej thiab qhov chaw ua haujlwm txuas nrog rau ib leeg kom ua tiav qee qhov kev ua haujlwm ntawm ntau qhov chaw, feem ntau yog tsim los ntawm ntau hom kev nqa daim hlau, threaded rods, paj bureau network screws, nplhaib ceev, threaded pob qij txha, fasteners thiab lwm yam.
