... .2)SPECIFICATIONProductCarbonless Copy PaperBrandZhongheng 99ClassificationCB,CFB,CFSubstanceCB: 46-50gsm, whiteCFB: 50-55gsm, white green, pink, blue yellowCF: 47GSM-55GSM, white, green ... content of delivery goods%6.5 ± 2.0 ncr carbonless SC paper