... ,F400,F500,F600,F700,F800,F1000,FB300,FB500 Our core board is mainly used to make high strength chemical ... and plastic film and etc.The specification of our core board is as following:1. Substance: 230g/m2- ... diameter: 1000mm-1200mm5. Packing: Wrapped with vinyl film for waterproof, then core paper packed.If you have any interest in our ... me your inquiry at any time. high grade core board for paper core