Our printing house is equipped with sheet-fed digital and sheet-fed offset printing technologies. The digital technology serves the needs of economical, good quality production of black-and-white publications in low numbers of a few dozen to a few hundred. We electronically accept materials for printing in .PS (postscript) format. From the approved data, the machine first prints each and every page of the publication, from first to last, and only then proceeds to print the next copy. The resulting collated sheets are processed with traditional binding machinery; they get thread-stiching , perfect-binding, hardcover binding.