1948 | DOHO business established at 4 Inaricho, Taito-ku, Tokyo |
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1963 | Started a system to sell slit processing at our company, as a pioneer in the industry |
1965 | Acquired Oike Copper and Brass Co., Ltd. Started purchasing brass products from Nippon Mining Co., Ltd. (currently JX Nippon Mining & Metals Corporation), and became a first sales agent |
1966 | Started doing business with Showa Aluminum Corporation, and became a regular distributor |
1970 | Moved our Headquarters to Ohanajaya, Katsushika-ku in conjunction with the expansion of our business Started doing business with Mitsubishi Corporation/Mitsubishi Aluminum Co., Ltd., and became a designated distributor |
1983 | Started importing copper products from Poongsan Metal Industrial Co., Ltd. (currently Poongsan Japan Corporation), and established our first overseas distributor |
1987 | Started exporting copper products to Hong Kong |
1989 | Started exporting copper products to Singapore |
1995 | Established affiliate company DOHO Hong Kong Limited Took a stake in Shin Katsushika Kinzoku Kogyo Co., Ltd. |
1996 | Established DOHO Metals China Plant, for sales of copper products and slit processing, in Qingxizhen, Dongguan, Guangdong Province, China |
2001 | Established DOHO Metal Products (Dongguan) Limited (owned company) in conjunction with expansion of our business in China |
2003 | Transferred operations of DOHO Metals China Plant, located in Qingxi, Shaoshan, to Tangxiazhen, Dongguan, Guangdong Province, China Started doing business overseas under the trade name of "DOHO Metal Products (Dongguan) Limited" |
2007 | Affiliate company Shin Katsushika Kinzoku Kogyo Co., Ltd. changed their name to J-Slit CO., LTD. |
2008 | Established a representative office of DOHO Headquarters in Shanghai, China Established Liidmex Co., Ltd. in Seoul, South Korea |
2009 | Absorbed and merged with Sanko Metal Co., Ltd. Established an intermediate share-holding local holding company, “DOHO ASIA HOLDINGS,” in the Hong Kong Special Administrative Region of the People’s Republic of China |
2010 | Closed the representative office of the Headquarters in Shanghai, China, and established our local subsidiary Tongya Trading (Shanghai) Limited |
2011 | Established a factory for slitting in cooperation with Daiken Co., Ltd. in Cebu, the Philippines |
2012 | Moved our Headquarters to Horidome-cho, Chuo-ku, and changed the company name to "DOHO Corporation" Resumed participation in our recycling business |
2013 | Started purchasing stainless steel from Shanghai STAL Precision Stainless Steel Co., Ltd |
2014 | Moved our Headquarters to Shinkawa, Chuo-ku |
2015 | Started new scheme for sales of wrought copper products with Furukawa Electric Co., Ltd. |
2017 | Moved our headquarters to Tsutsumidori, Sumida-ku Established Tohoku Office in Sendai City |
2018 | Welcomed the 70th anniversary since our founding Received Eco-Action 21 certification, the Economic management System formulated by MOE at our Yashio Recycling Center |
2019 | Established Nagano Office in Matsumoto City Established Onahama Recycling Technical Center in Iwaki City Established representative office for Tongya Trading (Shanghai) Limited in Dalian, Liaoning Province, China Moved Tohoku Office to Aoba-ku Sendai |
2020 | Moved to Nihombashi Ningyocho, Chuo-ku Changed our corporate identity Welcomed the representative office as our local subsidiary, and renamed Doho Asia Trading (Dailien) co., LTD. located in Dailien, Liaoning Sheng China |
2021 | Acquired ISO9001 & 14001 Transfer of the recycling business Closure of the Nagano and Tohoku sales office. Function integration to the head office. |