Large character online inkjet printers play an important role in the printing industry. Some recent changes have made practitioners pay special attention to them. More and more customers require printing of variable content. These variable contents not only include variable characters such as serial numbers, but more customers require the printing of variable barcodes, variable QR codes and other

US Presidential Election is only about four months ahead, and the election campaign is in full swing now. Donald Trump is too busy in his political activities seeking to be re-elected, and he shown helpless when facing the pandemic of COVID-19. Now he is even more embarrass by a series of anti-racial discrimination demonstrations that broke out "I can't breathe" across the United States.

Active RFID tags are generally powered by built-in batteries, and different tags use different numbers and shapes of batteries.