... Paper Rolls, double-ply and multi-ply POS papers; fax papers, copy papers and printing papers.etcProduct Description1) All size is available; 37mmx50mm, 37mmx70mm ... is ok: Cardboard core, plastic core3) High brightness, good in toughness, deep thermal image;4) Neat end surface, good ... in tightness, convenient and practical;5) Worldwide universal core, ...