Tau nyob rau hauv kov,

Daim ntawv thov

Cov hnab looj tes tiv thaiv ua haujlwm yog qhov tseem ceeb hauv kev lag luam uas cov neeg ua haujlwm tuav cov khoom ntse lossis cov khoom phom sij. Lawv tau siv dav hauv kev tsim kho, hlau fabrication, tsheb, thiab khoom noj khoom haus kev lag luam los muab kev tiv thaiv txaus tiv thaiv kev txiav, punctures, thiab abrasions.

Daim ntawv thov
Tsev>Daim ntawv thov

peb yog ib lub hnab looj tes ua lag luam thiab tuaj yeem tsim cov hnab looj tes ua haujlwm siv hauv ntau qhov chaw