Lexmark is Now The Only OEM Printer Manufacturer To Be ISO 20243 Certified. Toner News Mobile › Forums › Toner News Main Forums › Lexmark is Now The Only OEM Printer Manufacturer To Be ISO 20243 Certified. Date: Tuesday July 7, 2020 10:52:49 am This topic is empty. Viewing 1 post (of 1 total) Author Posts #195098 tonerKeymaster Lexmark Achieves Supply Chain Security Certification Lexmark is Now The Only OEM Printer Manufacturer to be ISO 20243 Certified. Click on photo to read article. Author July 7, 2020 at 10:52 AM Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In 0