

1979 Uni Industry Co., Ltd., is established to be operated as the Mitsubishi Pencil Group's largest cellophane tape factory.1975 Dia-Craft Co., Ltd., is established as a start of hobby-related business.1973 Marketing of "uni cellophane tape" begins.1972 The Company's stocks are listed on the First Section of the Tokyo Stock Exchange.1971 Marketing of "uni color" color pencils begins.1967 Marketing of the Company's first electric sharpener, the "ES-8," begins.1966 Marketing of "Hi-uni" high-quality pencils begins.1965 Production of felt-tip pens begins at the Fujioka Factory (currently the Gunma Factory).1962 The Company’s stocks are listed on the Second Section of the Tokyo Stock Exchange.1961 Marketing of mechanical pencils with a twist mechanism for lead advancement (for 0.7mm and 0.9mm leads) begins.1959 Production of ballpoint pens begins.1958 Marketing of "uni" high-quality pencils (originally 4H–4B) begins.1957 Marketing of Mitsubishi pencil sharpeners begins.


1901 Masaki Pencil becomes the first company to deliver domestically manufactured pencils (postal-use No.1887 Masaki Pencil Manufacturing Company is established in Tokyo by Yotsuyaku.
