Specialized equipment category for printed circuit board manufacturing used in the prototyping and development stages of electronic circuits. Equipment group supporting consistent manufacturing processes from design to completion of prototype boards, including PCB plotters, substrate exposure equipment, etching equipment, drilling equipment, resist coating equipment, and developing equipment. Specialized for circuit verification, functional confirmation, and design change response before mass production, supporting small-lot, multi-variety board manufacturing. Professional equipment that streamlines circuit prototyping work in R&D and design departments and board prototyping operations in electronic device development.