Start Hayakawa Plating Factory with a set of Equipment for Polishing and Plating. The founder President is Mr Kyoichi Hayakawa—(Ⅰ）
1963 – 12
Start the company up, name Hayakawa Valve Production Co., Ltd.
1978 – 1
Receive approval for the indication of JIS（approval number 477080）
1978 – 4
Authorized by Japan Water Works Association ( JWWA ) （Registration number D-63）
1980 – 4
Start the Plating Factory in Kamioka-cho, Yoshiki-gun, Gifu
1981 – 4
Open the Kantou Office
1985 – 4
Mr Chiaki Hayakawa assumes the Presidency—(Ⅱ）
1985 – 10
Open the Kansai office
1989 – 10
Expand the Casting Factory
1992 – 10
Start the Assembly Factory and the Delivery Center
1995 – 2
Start the Assembly Factory in Awano in Gifu-city
1995 – 8
Expand the Machine Processing Factory, Plating Processing Factory and the Assembly Factory
1998 – 5
Obtain ISO 9001
1999 – 4
Move the Kantou Office
2000 – 5
Close the Kamioka Plating Factory
2000 – 6
Obtain ISO 14001
2003 – 10
Close the Kantou Office
2003 – 11
Start the Takatomi FactoryClose the Awano Factory Receive the Invention incentive Award from Japan Institute of Invention and Innovation
2004 – 4
Mr Norio Hayakawa assumes the Presidency—(Ⅲ）
2004 – 7
Eliminate the approval for the indication of JIS at the Main Factory and the Takatomi Factory receives the same approval of JIS (approval number 477080)
2005 – 9
Increase the Capital Stock to JPY 78,000,000
2006 – 12
Mr Tohru Hayakawa assumes the Presidency—(Ⅳ)
2008 – 2
Receive approval for the indication of ‘NEW’JIS
2009 – 3
Open a branch in Shanghai, name HVS(SHANGHAI)TRADING CO.LTD.
2010 – 10
The Faucet for Water Purifier ( built-in cartridge type) receives The Good Design Award 2010 Display the Products at The SHANGHAI EXPO 2010 during Gifu Fair
2012 – 8
Change the company name to ‘MIZSEI MFG CO.,LTD.’ at the timing of 50th anniversary
2013 – 5
Sanshou Chemicals became a wholly owned affiliate company.
2014 – 3
Plastic factory was established in Sano, Yamagata.
