Razor hlau, tseem hu ua barbed daim kab xev, yog ib qho yooj yim rau nruab thiab ua raws li qhov pom kev cuam tshuam nrog rau lub cev tsis muaj zog, uas yog qhov nyuaj heev.
nce. Nws yog ua los ntawm galvanized lossis stainless hlau cov ntaub ntawv rau ntau qhov chaw thiab qib kev ruaj ntseg.

Punch lub galvanized los yog stainless hlau daim kab xev rau hauv cov duab sib txawv thiab ntau thiab tsawg
cov hniav. Thiab steel hniav yog txias crimped nruj nreem rau cov hlau.