Shenzhen Three Plus One Technology ls a factory engaged in printing for many years, inherited nearly a decade of printing technology and experience accumulated, has been committed to quality printing, there is a set of strict quality control process. ln this ever-changing era, the enterprise continues to improve thelevel of printing technicians, has developed into an enterprise with more than 10 sets of printing machinesand more than 60 professional printing technicians. Three Plus One's main business: self-adhesive sticker printing, computer barcode label printing, barcodesticker printing, computer hole labelprinting, barcode label printing. color card printing instruction manual printing.thermal paper printing and so on.