| http://www.w3.org/ns/prov#value | - By use of the present invention, however, slitted cardboard or plastic sheets can be produced at the manufacturing site and then, prior to stretching into the net form, they can be transported in their compact, unstretched form to the place of use, where they can be stretched into final net or honeycomb form for use in producing boxes, spacers or other insulating items similar to the corrugated ca
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