
Ningbo jiekelong Precision Manufacturing co.,Ltd manufactures brass valves and related plumbing components for water, gas, heating and HVAC systems, backed by strong R&D and automated, quality-controlled production.
Ningbo jiekelong Precision Manufacturing co.,Ltd (formerly Ningbo JKlong Valves Manufacturing Inc.) focuses on the R&D, manufacturing, sales, and service of brass valves and related products for water supply and drainage, urban gas, urban heating, HVAC, and supporting applications. Its portfolio includes brass valves, gas valves, heating-related equipment, sanitary ware, water meters, and a wide range of pipe fittings.
As a subsidiary of Ningbo Jintian Copper (Group) Co., Ltd.—a China Top 500 Enterprise and a major copper processing group—the company leverages integrated materials capability by using customized copper bar as its primary raw material. The business serves customers across China through a broad sales network spanning 32 provinces with nearly 400 outlets.
The company emphasizes technology-driven manufacturing and product innovation, supported by an experienced R&D team and a portfolio of product patents. Production and inspection are strengthened by automated equipment and testing capabilities, including infrared temperature measurement for hot-press forging, CNC multi-axis finishing, coordinate measurement, 100% sealing tests, and service-life testing to help ensure consistent quality from raw material through finished goods.
Management systems and product credibility are reinforced by multiple certifications and industry recognitions, including high-tech enterprise status and brand honors for JKlong in the Chinese valve market.

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The company serves customers across 32 provinces in China through a sales network with nearly 400 outlets, supporting responsive supply and service for infrastructure and building-system applications.
A technology-driven approach underpins continuous product development and process improvement. The company maintains an experienced R&D team and holds dozens of product patents, supporting ongoing innovation in brass valve and plumbing-system components.
To support stable performance and consistency, the company uses customized copper bar from the Jintian Group as a key raw material in its manufacturing processes.
On November 8, 2018, the company received the Zhejiang Manufacturing Certification Certificate jointly issued by the Zhejiang Manufacturing International Certification Alliance and Hangzhou Hande Quality Certification Service Co., Ltd., covering both water-valve and gas-valve products.
Guided by the principle of “Limited resources, unlimited use”, the company promotes clean production and harmonious development aligned with circular economy practices and new-type industrialization.
Operations are supported by established management systems spanning quality, environmental management, and occupational health and safety, reinforcing disciplined execution from incoming materials through final inspection.
JKlong was established in 1998 and began building its brass valve manufacturing and service platform.
Received Zhejiang Manufacturing Certification for both water-valve and gas-valve product categories.