2001

April
DIGITAL Hearts Ltd. was established in Hounan 1-chome, Suginami-ku, Tokyo.
Began to provide debugging services for consumer games and pachinko machines.
October
Moved to Sasazuka 2-chome, Shibuya-ku, Tokyo, as the business began to expand.

2002

August
Began to provide debugging services for PC games.
September
Acquired the license for General Worker Dispatching Undertakings.

2003

January
Began to provide debugging services for slots.
September
Began to provide debugging services for cell phone applications.
October
Reorganized into a stock company.

2004

August
Joined the Computer Entertainment Supplier’s Association as a full member.

2005

January
Moved the headquarters to Sasazuka 1-chome, Shibuya-ku, Tokyo as the business continued to expand.
April
Osaka Lab. was established in Yodogawa-ku, Osaka City, Osaka.
August
Nagoya Lab. was established in Meieki Minami, Nakamura-ku, Nagoya City, Aichi.

2007

September
Approved as an authorized test vendor for Microsoft Corp., becoming the first Japanese company to participate in the Authorized Xbox 360R Test Program (AXTP).
October
Acquired PrivacyMark accreditation from Japan Information Processing Development Corporation.

2008

February
Listed on Tokyo Stock Exchange’s Mothers section.[Stock Code: 3620]
May
Sapporo Lab. was established in Chuo-ku, Sapporo City, Hokkaido.
September
Relocated Nagoya Lab. to Tsubaki-cho, Nakamura-ku, Nagoya City as the business began to flourish.
Osaka Lab. space was expanded as the business grew further.

2009

April
Fukuoka Lab. was established in Chuo-ku, Fukuoka City, Fukuoka.
July
The headquarters was expanded as the business became more successful.

2010

May
The headquarters was relocated to Nishi Shinjuku 3-chome, Shinjuku-ku, Tokyo as the business continued to grow.
After the relocation of the head office, the former headquarters was converted to Sasazuka Lab. in order to integrate and consolidate the Debugging Services in the Tokyo area.

2011

February
Ueno Lab. was established in Taito-ku, Tokyo.
Switched its market listing to Tokyo Stock Exchange’s First Section.
March
Kyoto Lab. was established in Minami-ku, Kyoto City, Kyoto.

2012

August
Asakusa Lab. was established in Taito-ku, Tokyo.
December
Sapporo 2nd Lab. was established in Chuo-ku, Sapporo City, Hokkaido.

2013

April
Began to provide cyber security services.
July
Moved Kyoto Lab. to Minami-Ishida-cho, Higashi-Kujo, Minami-ku, Kyoto City as the business continued to grow.
October
Hearts United Group Co., Ltd. was established as a pure holding company through an equity transfer and the Company shifted to a pure holding company structure.

2014

March
Fukuoka Lab. space was expanded as the business grew further.
June
Joined the IT Verification Industry Association and The Japanese Society for Quality Control
November
Sendai TechnologyLab.was established in Sendai, Miyagi-ken.
Sapporo 3rd Lab. was established in Chuo-ku, Sapporo City, Hokkaido.
December
Okinawa Lab. was established in Uruma, Okinawa.

2015

April
Sapporo 3rd Lab. was established in Chuo-ku, Sapporo City, Hokkaido.

2016

August
Osaka Lab. was expanded and moved toChuo-ku, Osaka.

2017

April
Asakusa 2nd Lab. was established in Asakusa, Tokyo.