Gongbing tus kheej drilling screws txais cov cuab yeej siv German, muaj qhov tsim nyog, muaj zog anchoring quab yuam thiab yooj yim siv:
Cov ntaub ntawv raw siv yog tag nrho los ntawm cov tuam txhab steel loj hauv tsev thiab tuaj yeem ua tau raws li qhov yuav tsum tau muaj ntawm lub zog siab bolts: lub ntiaj teb kev siv tshuab thev naus laus zis siab tshaj plaws, tiv thaiv corrosion thiab huab cua tsis kam yog 5 npaug ntawm cov khoom siv galvanized.
Deepened cross qhov tsim,
Tsis yooj yim rau plam thaum siv
Self-tapping screws txais kev tsim technology siab heev, ceev tapping ceev thiab muaj zog anchoring quab yuam.
Feem ntau siv rau hauv qhov rooj, qhov rais, kho kom zoo nkauj, thiab kev sib txuas ntawm ntau yam hlau.

