Get high quality printing results with reliable and cost effective printing ribbon CAS Chemical possesses advanced thin-film costing technology and ink formulation chemistry that can meet various demands for printing quality, durability and running cost concerns from every industries. CAS Chemical’s Thermal Transfer Ribbon products are produced from the factory located in Chungju, Korea where equipped with full lines of manufacturing facility from ink formulation and ink coating to converting or slitting of coated ribbons. Therefore CAS Chemical can supply as coated Jumbo Roll or custom-made converted products that can meet the demands from every customers.