For More Than Fifty Years Our People and Print Have Made a Lasting Impression Dupli is a privately-held company established i ... n 1965. We continue to grow as businesses continue to embrace the value of print in today’s business climate. Our corporate offices are located in Syracuse with two additional manufacturing facilities in the northeast. DUPLI KNOWS PRINTING Dupli is one of the largest envelope printers in the Northeast and serves customers throughout the United States. The history of our company is founded on printing envelopes and printed envelopes remain our largest business segment today. However, Dupli prints so much more. Dupli offers comprehensive solutions focused on increasing your return on investment. Whether it is the envelopes you use everyday, the stationery you write on, the marketing collateral you pass out or your direct mail, our focus is squarely on utilizing the latest print technologies to make your print innovative, relevant and on demand. We want your print to leave a lasting impression and, most importantly, grow your business. read more