we are Tianzheng Paperboard factory in china. we have over 20years experience of paperboard and paper tube.we have get ISO9001 certificate in 2001. we can produce paperboard from width: 1120mm-1600mm Gsm:360-420g paper tube: length:by customer request thickness: from 1.5mm to 20mm core":from 1" to 5" we can supply you good quality lower price product.