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    In May, 1980, Chairman of Sungo Valves group Mr. Zhao Lei started to be engaged in the valve manufacture profession,
    In October, 1988, the predecessor of Sungo Valves group ----“ Yongjia County ZhengYi Automatic valve factory” established. Main productions are cast steel valves, ,Solenoid valve as well as Liquid Meter and so on.
    In May, 1996,It has constructed the 5000 square meters factories.
    In August, 1999, wins Wenzhou Mechanical Industry Key Enterprise.
    In July, 2000, invested 28,500,000 RMB to carry on the great technical renewal.
    In December, 2000, wins “the star enterprise”evaluated by the county government.
    In January, 2001, the butterfly valve has the honor to win the Practical National New Letter Patent (the Patent Number: ZL002.31388.X)。 
    In January, 2001, became the member of Wenzhou Pump&valve Industrial Association.
    In July, 2001,the products win the honor of“ Zhejiang Province high quality valve product”.
    In September, 2001 gets the approval of ISO9001 International Quality Control System which authenticates by EWC.
    In October, 2001 annexed “Yongjia Andong valves manufacture company”, so the enterprise changed the name as “Zhejiang Shangzheng valves co.,ltd”
    In August, 2002, became Chinese Chemical Industry Equipment Main corporation Fixed-point production Enterprise.
    In October, 2002, the metal sealbuttrfly valve wins the honor of “Zhejiang Quality Trustworthy Product”.
    In November, 2002, the modernized Shangzheng manufacture which located at Wenzhou Dongou Industrial district established
    In December, 2002, became member of Chinese General Mechanical Valve Profession Association
    In December, 2002, the enterprise credit rating is evaluated the AAA level(highest).
    In January, 2003, the normal open type solenoid valve, the high temperature solenoid valve has the honor to receive the Practical New Letter Patent (the patent number respectively is: ZL02208419.3, ZL02 2 08418.5).
    In April, 2003, wins the honor of“the Engineering Construction Recommends Products” evaluated by the China Engineering Construction Association Evaluation.
    In October, 2003, became the Level Supply Network member of the Chinese Petroleum Natural& Gas Main corporation (CNPC)
    In October,2003,promoting the name as “SUNGO Valves co.,ltd”
    In October, 2003, wins the API API-6D authentication and get the certificates.
    In December, 2003, introduce into gamma ray crack detection equipment and PMI material analyzer.
    In March, 2004, successfully carried on the ISO9001:2000 authentication to change the version.
    In March, 2004, becomes the supply member of National Electric power Company (CHINA POWER COMPANY)
    In March, 2004, two OFF-SET metal sealed ball valve obtains the New Letter Patent (the patent number: ZL 03 242096.X).
    In August, 2004, Investing 3.5 hectares area at Shanghai Jiading industrial district to Establish modernization valves factory.
    In August, 2004, becomes one of the 30 strong enterprises in the hometown of Chinese valves& pumps.
    In September, 2004, obtains the manufacture permission certificate by the National Quality testing Bureau pressure piping part (valve).
    In October, 2004, invites Chinese valve authoritative expert Lu Peiwen and Wu Mingjing to be the technical advisors.
    In October, 2004, Shangzheng valves group is established in due form, the core enterprise changes the name as Shangzheng valve group limited company, the registered capital amounts to 51,860,000 RMB.
    In November, 2004, obtains the import and export right herself.
    In December, 2004, the product is qualified through the country product quality spot-check.
    In December, 2004, get approval through ISO14001 (Environment Management System and OHSAS18001 (professional health safety control system).
    In April, 2005, was recognized for the Zhejiang enterprise AA level, defends the contract and heavy credit enterprise.
    In April, 2005, was recognized for the Zhejiang enterprise AA level, defends the contract and heavy credit enterprise.
    In May, 2005, becomes vice-chairmen enterprise of Yongjia pump&valve industrial association.
    In July, 2005, SUNGO obtains the famous trademark in the county.
    In August, 2005, becomes the member of China International trade Council Promotion, and Wenzhou International Commerce Chamber.
    In September, 2005, the SUNGO gate valve is recognized as the Wenzhou famous brand products.
    In September, 2005, becomes the standardized good behavior enterprise.
    In September, 2005, becomes the measurement examination system qualified enterprise.
    In January, 2006, obtains the API-607 ball valve fire protection certificate, (Certification by TUV)
    In February, 2006, considered as the tax payment wealthy and powerful enterprise in 2005 year.
    In March, 2006, becomes the Outstanding Supplier Unit for Shanghai Steam turbine Limited company.
    In April, 2006, becomes the the supplier of National Essence Electric Power (Guohua Electric Power).
    In April, 2006, obtains the CE-PED authentication, the certificate number: PED-B-98, (by the DNV authentication)
    In May, 2006, becomes the biggest valve supplier through the competitive tender for the Beijing Olympic Games project in 2008.
    In Feb,2008, “SUNGO” Trademarks become the China Well-known Trademark.
    In Apr.2009, Obtained TUV certification API607 fire certificate.(Truninon Ball valve 8 inch and Floating ball valve 2 incn)
    In Aug,2009,SUNGO group to become High-Tech Company in China.