| 1984 | July | Cosmohealth Co., Ltd. founded |
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| 1992 | April | Cosmo Doctor YK-9000 launched |
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| 1995 | March | Cosmo Doctor V-9000 launched |
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| 1996 | March | Chair for high-voltage electrotherapeutic devices launched |
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| | September | Iki-iki Health (health supplement) launched |
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| 1997 | February | Thermal Sheet launched |
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| | May | Yumegokochi (a far infrared ray futon) launched |
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| | July | Cosmo Doctor PRO-9000 launched |
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| 1998 | May | Dream Pillow launched |
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| | August | Moxa Iron Man (a moxa heater) launched |
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| 1999 | July | Cosmo Doctor Alpha-9000 launched |
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| | September | Health Interactive Method Co., Ltd. (a sales company) founded |
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| 2000 | August | Cosmo Genki-cha (Iki-iki Health series) launched |
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| 2002 | March | Company headquarters is relocated to Kyobashi, Chuo-ku, Tokyo |
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| | April | Tsubushio Soup (Iki-iki Health series) launched |
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| | June | Cosmo Doctor CX-9000 launched |
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| | August | Cosmo Chi-kara (Iki-iki Health series) launched |
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| | December | Cosmo Doctor Image-9000 and O2 Doctor launched |
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| 2003 | January | Cosmo Aojiru (Iki-iki Health series) launched |
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| 2004 | April | Cosmo Thermal Futon and Relaxation Chair launched |
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| | September | New Cosmo Doctor Image-9000 launched |
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| | | New Cosmo Doctor Alpha-9000 launched |
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| | November | Headquarters relocated to the seaside in Minato-ku, Tokyo |
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| 2005 | March | Cosmo Doctor IO-9000 launched |
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| | | EVA (enriched oxygen air charger-equipped chair) launched |
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| 2006 | November | AL-14000 Relaxation Chair launched |
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| 2007 | February | Merger formed between Cosmo Health Co., Ltd. and Cosmohealth Co., Ltd. |
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| | | (becomes the “Cosmohealth Co., Ltd. Development Project Division”) |
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| | March | Cosmo Goodness Pte. Ltd. (in Singapore) founded |
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| | May | Headquarters relocated to Kaji-cho, Chiyoda-ku, Tokyo |
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| | | Aquarich (a home water purifier) launched |
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| | | Dr. Sleep (a heated futon) launched |
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| 2009 | January | The IO 9000, EVA, and Aquarich received certification under the JAMSEA Medical Corps’ “Disclosure Reliability Program” |
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| | March | Cosmo Healthy Café Akasaka store opened |
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| | April | Cosmolase (a health supplement) launched |
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| 2010 | January | Cosmo Goodness Pte. Ltd. relocated to Jalan Bukit Merah |
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| | April | Aquarich acquired certification from BISA Japan |
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| | September | SE-14000 launched |
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| 2011 | May | Cosmo Goodness Malaysia Sdn. Bhd. founded |
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| | August | Cosmolase S (a health supplement) launched |
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| 2013 | February | Win Dr.-9000 launched |
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