Bolts, uas lub taub hau hexagonal feem ntau yog siv. Feem ntau, countersunk taub hau yog siv nyob rau hauv qhov chaw uas yuav tsum tau ib tug du nto tsis muaj protrusions tom qab kev twb kev txuas, vim hais tias lawv yuav tsum tau screwed rau hauv ib feem.
Bolt thiab txiv ntseej Description

FAQ
Q: Kuv puas tuaj yeem tau txais cov qauv ua ntej xaj?
A: Yog lawm, tau kawg. Feem ntau peb cov qauv yog dawb. peb tuaj yeem tsim los ntawm koj cov qauv lossis cov duab kos duab. Peb tuaj yeem tsim cov pwm thiab cov khoom siv.
Q: Tus neeg siv khoom yuav tsum them tus nqi xa khoom, ntau npaum li cas?
A: Rau tus nqi xa khoom, ntau cov qauv raug thov kom xa tuaj, yog li peb yuav tsum tau txais tus nqi xa khoom.
Q: Koj puas muaj kev tswj xyuas zoo?
A: Yog, peb tau txais BV, SGS authentication, CE ISO.
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