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| 2011 | The headquarters is moved to Osaka City Chuo Ward Kitahama. Established the Kameyama Second Factory in Mie Prefecture. |
|---|---|
| 2010 | Started sales of MARU (Tanks for holding rainwater) Started sales of Resin type CURRULLAQ. Started sales of Heatproof Trap. |
| 2009 | Started sales of Bottle Trap. |
| 2008 | Started sales of marutrap XT Trap. |
| 2007 |
Established the Kameyama Factory in Mie Prefecture. Increased capital to 300,000,000 yen. |
| 2005 | Established MARUICHI (Shanghai)TRADING CO.,LTD. (in CHINA.) |
| 2004 |
Assume CEO from the president. Promoted Nobuyuki Inui as the new president. New MARUICHI aims at the further growth development. Started sales of Aqua-La-Vie. Started sales of Stainless-Steel Trap Set. |
| 2003 |
Established the Nagoya Branch Office in Aichi Prefecture. Received ISO 14001 certification. Marked the 40th anniversary of its establishment in August Started sales of CURRULLAQ. |
| 2002 | Increased capital to 200,000,000 yen. |
| 2001 |
Started sales of KIT Trap. Started sales of DP Trap. |
| 2000 | Increased capital to 150,000,000 yen. |
| 1999 | Received the ISO 9001 certification. |
| 1998 |
Received NEW-QIG. Newly established the headquarters building in Nishi-ku, Osaka City. |
| 1996 |
Marked the 50th anniversary of its foundation. Newly established the Maruichi Tokyo Building and moved the Tokyo Branch. Started sales of Rear Drain Trap for washstands. Started sales of Waterproof Pan for Washing Machine. |
| 1995 | Achieved success in developing raw garbage disposal. Achieved success in developing food thawing equipment. |
| 1994 |
Established TOMMY & BRAIN CORPORATION (in the U.S.). Developed Maru flexible pipes. Started sales of Maru Trap EC. |
| 1993 |
Opened the Osaka Branch in Osaka Ekimae No. 4 Bldg. Marked the 30th anniversary of its establishment in August. |
| 1991 | Completed the Iwaki Plant II. |
| 1990 | Developed pop-up products for baths. |
| 1988 |
Moved the Tokyo Branch to the building of Sunshine 60. Established the Himeji Training Center. |
| 1987 |
Expanded the Iwaki Plant. Raised the Tokyo Sales Office to the status of Tokyo Branch. Established COSMO CORPORATION (overseas joint investing company in South Korea). |
| 1984 |
Expanded and additionally established the headquarters plant. Developed pop-up products for washstands |
| 1983 |
Established Maruichi Distribution Service Co., Ltd. Changed the company name to Maruichi Co., Ltd. Started sales of Maru Trap ET series. Increased capital to 95,000,000 yen. |
| 1982 |
Constructed new building and plant of the company headquarters at the
present address and moved to the new location. Established the Development Research Institute at the former headquarters location. Established Marusho Co., Ltd. |
| 1979 |
Expansion of the Iwaki Plant. Increased the capital to 45,000,000 yen. |
| 1978 | Started sales of drain plugs and traps for washstands. |
| 1977 |
Established the Tokyo Sales Office in Ikebukuro, Tokyo. Increased capital to 30,000,000 yen. |
| 1976 |
Newly established the Iwaki Plant. Started sales of Maru Trap KK series. Increased capital to 20,000,000 yen. |
| 1975 |
Established Maruichi Powder, Ltd. Started sales of Ace M. |
| 1973 |
Moved headquarters to Rokutan Nagayoshi, Hirano-ku, Osaka City. Started manufacture and sales of drain fittings and parts for general kitchens. |
| 1970 | Developed kitchen traps. |
| 1968 |
Started sales of industrial rubber products and sink exhaust hoses. Increased capital to 2,000,000 yen. |
| 1963 |
Established Maruichi Rubber Shoko Co. Ltd. at Minamihorie Odori, Nishi-ku, Osaka City. (Capital: 500,000 yen) |
| 1946 |
Started business as Maruichi Rubber Shoko operating wholesale trade of industrial rubber products. |