Y.E.S.I. Holdings Inc.

Established Y.E.S.I. Inc. in Akishima City, Tokyo, with a capital of 2,100 thousand yen.

Y.A.C. Co., Ltd. was established at Akishima, Tokyo with a capital of 2.1 million yen.

Entered the industrial packaging machinery industry. Started development and sales of packaging machines for the food industry and the cleaning industry.

Entered the industrial package business and started selling packaging equipment to the food and cleaning industries.

Entered the industrial packaging machinery industry. Started development and sales of packaging machines for the food industry and the cleaning industry.

Relocated headquarters to Tachikawa City, Tokyo.

Corporate head quarter moves to Tachikawa City, Tokyo.

Completed the Akishima Factory in Akishima City, Tokyo.

Built the Akishima factory in Akishima City, Tokyo.

Entered the semiconductor industry.

Entered the semiconductor business.

Completed the headquarters factory and relocated headquarters to Akishima City, Tokyo.

Built the headquarters factory in Akishima.

Developed and started sales of POS systems for liquor stores.

Developed and started selling POS systems for liquor stores.

Entered the magnetic disk industry.

Started magnetic memory disk business.

Completed the expansion of the headquarters factory in Akishima City, Tokyo.

Corporate main factory extends floors.

Established a representative office in Santa Clara, California, USA.

Opens California Representative Office at Santa Clara, California.

Established a Technical Center in Akishima City, Tokyo.

Builds Technical Center at Akishima City, Tokyo.

Registered shares on the over-the-counter market with the Japan Securities Dealers Association (currently JASDAQ Securities Exchange).

Started to traded on counter of Japan Securities Dealers Association (present “JQ”).

Established HYAC Corporation in California, USA, with a capital of 200 thousand US dollars. Established YAC Systems Singapore Pte Ltd in Singapore with a capital of 300 thousand Singapore dollars.

Established YAC Systems Singapore Pte. Ltd. at Singapore with a capital of S$300 thousand.

Established HYAC Corporation in California, USA, with capital of 200 thousand USD as a manufacturer and seller of various automation equipment. Also established YAC Systems Singapore Pte Ltd in Singapore with capital of 300 thousand SGD.

Completed the Akishima Second Factory.

Builds the 2nd Akishima Factory.

Merged with Plasma System Inc. and acquired the handler division from M.C. Electronics Inc.

Merged with Plasma System co., Ltd.

Acquired the business of industrial cleaning machinery from Fuji Vehicle Corporation and Fuji Washer Corporation.

Purchases industrial laundry equipment business from Fuji car Mfg group.

Made Yoshimura Seiki Corporation a consolidated subsidiary and renamed it Y.E.S.I. Niigata Seiki Corporation.

Acquires and consolidates Yoshimura Machinery Co., Ltd and changes the corporate name to YAC Niigata Machinery Co., Ltd.

The company's shares are listed on the Second Section of the Tokyo Stock Exchange.

Listed on TSE2.

Designated on the First Section of the Tokyo Stock Exchange.

Listed on TSE1.

Transferred the solar cell business division from S.E.S. Corporation.

Purchases Photo Voltaic business from S.E.S. Co., Ltd.

Established a local subsidiary in South Korea.

Establishes subsidiary in Korea.

Established a local subsidiary in China, Waye Xin (Shanghai) International Trading Co., Ltd.

Established YAC (Shanghai) International Trade Co., Ltd. in Shanghai, P.R.C.

Made Denco Corporation a consolidated subsidiary.

Acquired and consolidated Denko Co., Ltd. and changed name into YAC Denko Co., Ltd.

Changed the company name from Denco Corporation to Y.E.I. Denco Corporation.

DENKO Co., Ltd. changes corporate name to YAC DENKO Co., Ltd.

Made International Electric Heating Industry Co., Ltd. a consolidated subsidiary and renamed it "YAC International Electric Heating Co., Ltd.".

Acquired and consolidated Kokusai Dennetsu Co., Ltd and changed name into YAC Kokusai Dennetsu Co., Ltd.

Acquired and consolidated Ohkura Electric Co., Ltd.

Made Okura Electric Co., Ltd. a consolidated subsidiary.

Established Y.E.I. Dastec Corporation.

Established YAC Dastech Co., Ltd.

Made Y.E.I. Foton Corporation a consolidated subsidiary.

Acquired and consolidated Pheton Co., Ltd. and changed name into YAC Pheton Co., Ltd.

Established Shaoxing Micro Waye Xin Electronic Equipment Co., Ltd.

Established Shaoxing Weiaixin Electronic Equipment Co., Ltd.

Established Shaoxing Weiaixin Electronic Equipment Co., Ltd.

Made Japan Garter Corporation a consolidated subsidiary.

Acquired and consolidated Nihon Garter Co., Ltd.

Established a local subsidiary in Taiwan, Taiwan Micro Waye Xin Technology Co., Ltd.

Established T.Y.A.C.CORP.

Merged with Y.E.I. Foton Corporation.

Merged with YAC Phoeton Co., Ltd.

Acquired shares of Miyuki Elex Corporation (now Y.E.I. Elex Corporation) and made it a consolidated subsidiary.

Acquired and consolidated Miyuki Elecs Co., Ltd.

Transferred the ion beam application equipment business from Hitachi Ibaraki Technical Service Co., Ltd.

Acquired ion beam application equipment manufacturing business from Hitachi Ibaraki Technical Service Ltd.

Shifted to a holding company system and changed the company name to Y.E.I. Holdings Co., Ltd.

Transition to holding company system and changed name to Y.A.C. HOLDINGS CO., LTD.

Completed the construction of the Fuji factory in Minami-Tsuru District, Yamanashi Prefecture.

Built Fuji factory at Minamitsuru-Gun, Yamanashi.

Started a business unit system by classifying 13 consolidated subsidiaries into four business areas.

Started Business Unit system by dividing 13 consolidated companies into 4 business field.

Acquired shares of Daiichi Corporation (Saitama Prefecture, Sayama City) and made it a consolidated subsidiary.

Acquired shares of Daiichi Co., Ltd. (Sayama, Saitama) and made it a consolidated subsidiary.

Y.E.S. Gutter Corporation (Surviving Company) merged with Daiichi Corporation (Dissolved Company).

Discontinued the business unit system.

YAC Garter Co., Ltd. (surviving company) merged with Daiichi Co., Ltd. (disappearing company).

Terminated business unit system.

Y.E.S. Denko Corporation (Surviving Company) merged with YAC International Electric Heating Corporation (Dissolved Company).

YAC Denko Co., Ltd. (surviving company) and YAC Kokusai Dennetsu Co., Ltd. (disappearing company) merged.

Transitioned from the First Section of the Tokyo Stock Exchange to the Prime Market.

Moved from the First Section of the Tokyo Stock Exchange to the Prime Market.

Y.E.S. Machinery Corporation (Surviving Company) merged with Y.E.S. Niigata Seiki Corporation (Dissolved Company).

Y.A.C. Machinery Co., Ltd. (surviving company) and YAC Niigata Machinery Co., Ltd. (disappearing company) merged.

Y.E.S. Denko Corporation (Surviving Company) merged with Y.E.S. Technologies Corporation (Dissolved Company).

Acquired shares of JE International Corporation and GD Tech Corporation, and made them consolidated subsidiaries.

YAC Denko Co., Ltd. (surviving company) and Y.A.C. Technology Co., Ltd. (disappearing company) merged.

Acquired shares of JE International Corporation and GD tech Co., Ltd. and made them consolidated subsidiaries.

Signed a capital partnership agreement with LINUS BIOTECHNOLOGY, INC. in the United States.

Concluded an agreement on capital alliance with Linus Biotechnology Inc.

Signed a capital alliance agreement with LINUS BIOTECHNOLOGY, INC. in the United States.

Ohkura Electric Co., Ltd. acquires all shares of Hosyo-Sangyo Inc. and makes it a consolidated subsidiary.

Acquired all shares of Takaho Sangyo Co., Ltd. and made it a consolidated subsidiary.

Established Y.E.S. Bio Corporation and made it a consolidated subsidiary.

YAC BIO Inc. is established and becomes a wholly owned subsidiary.

Acquired some shares of TT Holdings Corporation (which wholly owns Topcon Techno House Corporation) and made it a consolidated subsidiary.

Partial acquisition of TT Holdings, Inc. shares, which owns 100% of the shares of Topcon Technohouse Corporation, to make it a consolidated subsidiary.

Topcon Techno House Corporation changed its name to Techno Optis Corporation.

Topcon Technohouse Corporation changed its name to TechnoOptis Co., Ltd.

Acquired additional shares of Techno Optis Corporation (wholly owned by TT Holdings Corporation) and made it a wholly owned subsidiary.

Acquired additional shares of TT Holdings, Inc., which owns 100% of the shares of TechnoOptis Co., Ltd. to make it a wholly owned subsidiary.

Merged Techno Optis Corporation (Surviving Company) with TT Holdings Corporation (Dissolved Company).

TechnoOptis Co., Ltd. (surviving company) and TT Holdings, Inc. (disappearing company) merged.

Acquired subsidiaries Sanwa Electric Instruments Corporation and Sanwa Test Mechs Corporation.

Acquisition of Sanwa Electric Instrument Co., Ltd. and Sanwa Tesmex Co., Ltd. as subsidiaries.

Acquisition of Sanwa Electric Instrument Co., Ltd. and Sanwa Tesmex Co., Ltd. as subsidiaries.