1.Passed Passed ISO9001,14001,OHSAS18001 SGS 2.The barcode Grade:A(preferred)/B 3.Cooperated with EMS, DHL,UPS,etc 4. OEM&ODM Services Changeable bar-code technology is one of technologies in our company. It is used to all kinds of express bills in Logistics and Express companies. We are one of the largest enterprises for printing logistics and express bills in the state. We also have cooperated ...