Part One Co., Ltd. was officially founded in Shinjuku, a district of Tokyo, on April 25, 1977, originally set up as a project design production company. By December of 1979, the company was already expanding, now also including a professional photo studio. Part One has been providing various kinds of services to Takara ever since the days of the Diaclone line, among them products planning, packaging design, character design and promotional planning. Among other things, Part One is responsible for designing the packaging for the Binaltech toyline. Today, Part One's official company description is "Digital Design Office".