... F500,F600,F700,F800,F1000,FB300,FB500 Our core board is mainly used to make high strength chemical fiber ... industrial paper tubes for paper mill and plastic film and etc.The specification of our core board is as following: ... diameter: 1000mm-1200mm5. Packing: Wrapped with vinyl film for waterproof, then core paper packed.If you have any ... your inquiry at any time. high grade core board for paper core