Corrugated cardboard yog ib hom ntawm cov khoom ntim khoom tsim los ntawm kev sib xyaw ntawm ob lossis ntau daim ntawv, nrog rau cov ntaub ntawv sab nrauv, ib lub hnab hauv qab, thiab ib qho nruab nrab corrugated.Cov txheej txheem ntawm kev tsim corrugated cardboard muaj ob peb kauj ruam, uas yog raws li nram no: Paper Making: Thawj kauj ruam ...
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