Dab tsi yog qhov 7: 1 Kev Nyab Xeeb Kev Nyab Xeeb thiab Vim Li Cas Nws Tseem Ceeb?

Lub lifting sling nrog 7: 1 kev nyab xeeb yam muaj lub zog tawg xya npaug ntawm nws qhov ntsuas kev ua haujlwm load txwv. Qhov no txhais tau hais tias ib txoj hlua ntsuas rau 1 tuj yuav tsum tiv taus yam tsawg 7 tons ua ntej ua tsis tiav. Kev nyab xeeb 7: 1 yog tsim los ntawm cov qauv kev lag luam tseem ceeb suav nrog EN 1492-1, EN 1492-2, thiab AS 4497: 2018 rau cov hlua hluavtaws. Kab lus no piav qhia txog qhov sib txawv ntawm qhov kev nyab xeeb thiab kev txwv kev ua haujlwm, vim li cas 7: 1 yog tus qauv rau cov hlua hluavtaws, nws piv rau lwm yam khoom siv li cas, thiab vim li cas qhov kev nyab xeeb no yog qhov tseem ceeb rau kev tiv thaiv cov neeg ua haujlwm thiab cov khoom muaj nqis hauv ntiaj teb kev nqa khoom.