Mitsubishi Heavy Industries is Japan's largest military manufacturer. In 2003, the amount of military industry orders accepted by the Self-Defense Agency was 280 billion yen, ranking first among all military industry enterprises. Equipment produced by Mitsubishi Heavy Industries, such as F-2 and F-15J fighter jets, and Type 90 tanks, play a core role in the Air Self-Defense Force and Ground Self-Defense Force. In the Maritime Self-Defense Force, Mitsubishi Heavy Industries builds almost half of the equipment. of submarines, and a third of destroyers. Its status in the Japanese military industry is evident. nbsp;nbsp;nbsp;Historical evolution and summarynbsp;nbsp;nbsp;The predecessor of Mitsubishi Heavy Industries can be traced back to the Meiji Restoration. In 1884, Mitsubishi founder Yataro Iwasaki leased the Nagasaki Shipbuilding Bureau of the Ministry of Industry and Industry from the government and named it Nagasaki Shipyard, which later developed into Mitsubishi Shipbuilding Co., Ltd. By 1934, as the company's business had expanded to heavy machinery, aircraft, railway vehicles and other fields, the company was renamed Mitsubishi Heavy Industries Co., Ltd. nbsp;nbsp;nbsp;After the end of World War II, due to the policy of the US occupation authorities to dismantle the Zaibatsu, Mitsubishi Heavy Industries was divided into three companies: West Nippon Heavy Industries Co., Ltd., Central Nippon Heavy Industries Co., Ltd., and East Nippon Heavy Industries Co., Ltd. company. However, with changes in U.S. policy and Japanese domestic politics, the three companies merged in 1964 and rebuilt Mitsubishi Heavy Industries Co., Ltd. to this day. During this period, Mitsubishi Heavy Industries' automotive division became independent as "Mitsubishi Motors Corporation" in 1970. nbsp;nbsp;nbsp;Currently, Mitsubishi Heavy Industries' business covers machinery, shipbuilding, aerospace, atomic energy, electric power, transportation and other fields. As of April 1, 2004, it had a registered capital of 265.6 billion yen and a number of 34,306 employees. It has 9 overseas offices or representative offices, 9 branches, 6 research institutes, and 9 business offices. The annual order volume is 2,159.2 billion yen (from April 1, 2003 to March 31, 2004), and the annual sales is 1,940.1 billion yen (statistical date is the same as before). Among them, calculated in terms of the proportion of department sales to total sales, the ship•marine department accounts for 8, the nuclear energy department accounts for 23, the machinery and steel structure department accounts for 20, the aviation •space department accounts for 17, and the vehicle, Machine tools and other industrial sectors accounted for 29, and other industries accounted for 3. nbsp;nbsp;nbsp; Mitsubishi Heavy Industries is a member of the Mitsubishi Zaibatsu. Today's Japanese chaebols appear in the form of so-called keiretsu (the pronunciation of the Japanese kanji for "series"). The Mitsubishi series companies are all members of the Mitsubishi Group organization "Jinyao Club" (meaning Friday Club). They include (for the sake of uniformity, this article uses their Japanese names in Chinese characters or their original English names): nbsp; nbsp; nbsp; Asahi Glass (Glass , chemical companies), Kirin Beer, New Nippon Oil, Tokio Marine & Nichido Fire Insurance, Bank of Tokyo-Mitsubishi, Nikon Camera, Nippon Yusen Line, P.S Mitsubishi (engaged in the construction industry), Mitsubishi Aluminum (Mitsubishi Aluminum), Mitsubishi Chemical, Mitsubishi Chemical Machinery, Mitsubishi Gas Chemical, Mitsubishi Estate (real estate), Mitsubishi Motors, Mitsubishi Heavy Industries, Mitsubishi Plastics, Mitsubishi Corporation, Mitsubishi Trust Bank, Mitsubishi Shindo, Mitsubishi Steel, Mitsubishi Paper, Mitsubishi Warehouse, Mitsubishi General Research Institute (Japanese characters are "Mitsubishi General Research Institute"), Mitsubishi Electric, Mitsubishi Cable Industries, Mitsubishi Fuso Trucks and Buses, Mitsubishi Materials (Mitsubishi Materials), Mitsubishi Rayon ("Mitsubishi Rayon"), Meiji Yasuda Life Insurance. nbsp;nbsp;nbsp;Companies in the same series can cooperate more closely. Each company can provide other brother companies with good products or lower prices within its own areas of responsibility. For example, Nippon Yusen Kaisha is a major orderer of Mitsubishi Heavy Industries' shipping department, and Mitsubishi Electric provides electromechanical products for Mitsubishi Heavy Industries. Companies such as Mitsubishi Steel, Mitsubishi Steel, Mitsubishi Aluminum and Mitsubishi Materials can provide Mitsubishi's shipping and aerospace departments. Provide reliable raw materials.

Companies such as Mitsubishi Bank and Tokio Marine can provide loans and special insurance services (such as space launch insurance). Optical products produced by Nikon and new materials produced by Mitsubishi Plastics are all indispensable components for high-tech weapons. nbsp;nbsp;nbsp;The Mitsubishi Group also has some affiliated companies and social groups as peripherals, including:nbsp;nbsp;nbsp;"IPnbsp;Talk" Group (engaged in phone card business), Atami Yowadong (Iwasaki Koyata Memorial Hall), MT Insurance Services Co., Ltd., Kantokaku (a hotel renovated from the former residence of the Iwasaki family), Koiwai Farming, Shonan Suburban Club, Shizuokado Bunko Museum of Art, Zongtong Group (a property management company mainly for Tokyo-Mitsubishi Bank), Dainippon Paint, Dia Senior Society Research Foundation, Diamond Family Club (a matchmaking agency jointly funded by 29 companies in the Jinjinkai Association, mainly for internal services within the group), Chitose Kosan, Toyo Bunko, Marunouchi Yorozu (a real estate agency) and advertising agencies), Mitsubishi Jinkai (a networking organization for the chairman and general managers of 29 Mitsubishi companies), Mitsubishi Club, Mitsubishi Economic Research Institute, Mitsubishi Broadcasting Committee, Mitsubishi Foundation, Mitsubishi CC Research Association (IT industry Research institution), Mitsubishi Corporate Name and Trademark Committee, Mitsubishi Market Research Association, Mitsubishi Yowakai (a club with the theme of sports and health), LEOC Japan (a company engaged in medical care and company canteen management). nbsp;nbsp;nbsp;It can be seen that through the collaboration and division of labor of large groups, Mitsubishi Heavy Industries can obtain funds, technology, raw materials, upstream products, and financial services from brother enterprises and groups