Classification of multifunctional digital multifunction devices used in manufacturing office and administrative departments. Includes network-compatible equipment that integrates four basic functions - copy, printer, scanner, and fax - into one unit. Streamlines document processing essential for manufacturing operations such as blueprint printing at production sites, copying quality control documents, digitizing inspection records, and document transmission with business partners. Handles business-use digital multifunction devices that meet diverse document processing needs in manufacturing, including A3-compatible models, high-speed printing functions, and security-featured models. Clearly distinguished from single-function devices, achieving space-saving and improved operational efficiency through multiple function integration.