Thaum nws los txog rau qhov tsis muaj corrugated cardboard, ntau tus neeg yuav xav txog corrugated cardboard. Qhov tseeb, qhov tshwm sim no tsis zoo ib yam li inverted. Nws raug nquahu kom tshawb xyuas los ntawm ntau yam xws li cov khoom siv raw, ib lub tshuab pobzeb, flyovers, pasting machine, conveyor siv, p ...
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