Founded
About CNZG / Company profile
Manufacturing built
through more than two decades.
From the Wenzhou headquarters to manufacturing bases in Lishui and Qingtian, CNZG has grown through specialised production, equipment investment and digital-workshop development.
Founded in 1998 · Wenzhou, Zhejiang, ChinaCompany profile
Industrial valve research, engineering, manufacturing and sales.
Zhejiang Zhonggong Valve Group Co., Ltd. is headquartered in Oubei, Yongjia, Wenzhou, with manufacturing operations across Wenzhou, Lishui and Qingtian. The group brings valve research, engineering, manufacturing and sales into one operating system.
The Oubei headquarters houses administrative, research, sales, quality-control and process-management functions. The group has five subsidiaries, including three wholly owned subsidiaries and two controlled companies.
The product portfolio is organised around GB, HG, API, ANSI, JIS and DIN standard systems and covers ball, butterfly, gate, globe, check, bellows, plug, power-station, forged-steel, stainless-steel, API and other industrial valves.
m² manufacturing footprint
team members
group companies
production units
valve product families
Manufacturing locations
Wenzhou headquarters and
multiple production bases.
Operations across Wenzhou, Lishui and Qingtian support administration, research, production, quality control and process management.
Company history / Since 1998
From one factory to a
multi-site manufacturing group.
Six milestones from the company’s founding to expanded production, group development and digital manufacturing.
Zhejiang Zhonggong Valve Group1998
Foundation
The predecessor factory was established in Oubei Puyi Industrial Zone and was later renamed Yongjia Zhonggong Valve Factory.
2002
Expansion
Production expanded and moved to Oubei Wuxing Industrial Zone under the name Zhejiang Zhonggong Valve Co., Ltd.
2003
Expansion
A manufacturing subsidiary was established in Qingtian, Lishui, later renamed Zhejiang Zhonggong Valve Group Qingtian Zhonggong Valve Co., Ltd.
2009
Group development
The company became Zhejiang Zhonggong Valve Group Co., Ltd., with registered capital of RMB 56.78 million and four subsidiaries.
2019
Capability investment
The group invested in intelligent production and testing equipment, with registered capital increasing to RMB 127.78 million.
2023
Digital transformation
A digital-workshop transformation programme began to improve production efficiency and specialised manufacturing capability.
Standards & portfolio
Organise products and engineering content around applicable standards.
The company profile references GB, HG, API, ANSI, JIS and DIN systems and materials including carbon, alloy, low-temperature, duplex and stainless steels, ultra-low-carbon stainless steel, Monel and other special alloys.
- Ball, butterfly, gate, globe and check valves
- Bellows, plug, power-station and control valves
- Forged-steel, stainless-steel, API and other specialised valves
- Contact sales or technical service for project-specific standards, materials and application limits
Qualifications & honours
Company qualifications, certifications and honours.
Review production licences, management-system certificates, CE documents and company recognition.
- 01Business licence
- 02TS A1 certification
- 03Work safety standardisation, Level III
- 04ISO 9001 quality management certificate — Chinese
- 05ISO 9001 quality management certificate — English
- 06ISO 14001 environmental management certificate — Chinese
- 07ISO 14001 environmental management certificate — English
- 08ISO 45001 occupational health and safety certificate — Chinese
- 09ISO 45001 occupational health and safety certificate — English
- 10CE certificate 1
- 11CE certificate 2
- 12Bank account opening permit
- 13Zhejiang innovative SME recognition
