Duplo was founded in 1951 in Japan. The company specializes in post-press printing equipment and industrial paper finishing machinery. Its main product lines include bookletmaking systems, paper folding machines, collators, trimmers, and perfect binders. The company also produces digital finishing equipment and creasing machines.

Duplo serves the commercial printing, packaging, and direct mail industries. Its customers include print shops, in-plant facilities, and commercial binderies. The most popular machine models include the Duplo System 5000 and System 4000 bookletmakers, the DC-646 and DC-616 slitter/cutter/creasers, and the DSF-2200 paper folder series. The DBM-150 and DBM-120 bookletmaking systems are also widely used in mid-volume production environments.