Daim hlau thaiv kev tsheb ciav hlau
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Daim hlau thaiv kev tsheb ciav hlau thiab MS corrugated cardboard
Nws yog daim ntawv tseem ceeb ntawm cov hlau semi-steel guardrail, nws yog ib daim hlau corrugated guardrail phaj splicing ib leeg thiab txhawb nqa los ntawm cov qauv txuas ntxiv kem. Nws muaj peev xwm muaj zog los nqus lub zog sib tsoo.