Qhov tseem ceeb xauv xov ntaws yog muaj nyob rau hauv cov pa roj carbon steel thiab stainless, ob qho tib si ntom thiab metric series, thiab cov khoom hauv cov leeg ntsa,
Heavy luag haujlwm. Featuring ib qho tseem ceeb-nruam ua haujlwm uas tiv thaiv kev sib hloov ntawm kev co los yog lub cev.
Nta ntawm qhov tseem ceeb thaiv xov ntxig xov:
1. Lub tes tsho pluaj nplaum tuaj yeem kho kho cov xov uas puas lawm.
2. Lub tes tsho thaiv plawv yog tshwj xeeb tshaj yog rau cov cheeb tsam uas xav tau lub zog ntawm sab nraud, uas tuaj yeem ua tau zoo
poob siab-resistant thiab rub-resistant.
3. Lub tes tsho tawm yuav ua rau lub qhov xov qhov muaj zog zoo tshaj qhov qub xov xaim ntsia hlau.
4. Lub tes tsho thaiv plab yog ib qho yooj yim siv thiab yooj yim rau nruab.
