PE UD npuag, tseem hu ua polyethylene unidirectional ntaub, yog cov khoom siv ntau yam uas tau siv dav hauv ntau qhov kev lag luam vim nws cov yam ntxwv tshwj xeeb.Txawm hais tias nws yog rau kev tiv thaiv iav, armor, lossis txawm tias cov ntawv thov ua haujlwm siab, nkag siab txog qhov tsis muaj ...
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