Our History
• In April 1999, Chairman of Dagao started his experience in the valve manufacturing.
• In July 2012, The predecessor of Dagao(TANA) was established, main products covering gate valve, globe valve, check valve, butterfly valves etc.
• In February 2013, constructed its 2000 square meters factories, enhance production ability for facilities, employees up to 30.
• In March 2015, became the member of Wenzhou Pump & valve Industrial Association.
• In March 2015, win the honor of China quality, service & credit class AAA enterprise.
• In September 2015, win the honor of Zhejiang Quality Trustworthy Product.
• In Novemeber 2015, approved the special equipment type-examination certificate.
• In December 2015, win the honor of Zhejiang Green enterprise.
• In February 2016, constructed its another 3000 square meters factories, enlarge product range for petrochemical, power station equipments.
• In January 2018, approved by ISO9001 International Quality Control System, ISO14001 International Environmental
Management System, ISO18001 International Occpational Healthy And Safety Management System, CE1282 quality system.
• In August to November 2018, the design of cryogenic gate valve, cryogenic globe valve, Y type globe valve, power station applicated high temp. & high pressure PSB globe valve, packing self-tighted sealed structure, angle globe valve, PSB double disc globe valve, PSB check valve were patented.
• In February 2019, gate/ globe/ check valves factory and office move to new place cover 3600 square meters.
• In April 2019, becomes the supply member of China Petroleum & Chemical Corp. (Sinopec), China gas association.
• In May 2019, becomes the supply member of China Huadian Group, China contruction & metal structure association.
• In November 2019, contructed its 13320 square meters factories in Lishui city (45km far to wenzhou city).
• In May 2020, approved by new ISO9001 International Quality Control System, ISO14001 International Environmental Management System, ISO45001 International Occpational Healthy And Safety Management System, CE1282 quality system, Special equipment type test certificate.
• In July 2020, win the honor of China Famous Products, Government procurement good quality supplier.
• In March 2021, approved by API6D American Petroleum Institute Certificate.