<form id="bptt9"></form>

<noframes id="bptt9">

    <form id="bptt9"><listing id="bptt9"><meter id="bptt9"></meter></listing></form>
    <form id="bptt9"><th id="bptt9"><progress id="bptt9"></progress></th></form>

    Honeycomb paperboard

    Honeycomb paperboard is according to the nature of the principle of makinghoneycomb structure, which is the corrugated paper with adhesive meansconnected into a plurality of hollow three-dimensional hexagonal, formingan integral stress parts-paper core, and the double-sided adhesive paperand a new kind of sandwich structure of environmental protection and energysaving materials.
    国产另类TS人妖一区二区