YUYAO NO.4 INSTRUMENT FACTORY
YUYAO NO.4 INSTRUMENT FACTORY is a longstanding manufacturer based in Shanghai, China, specializing in the production of solenoid valves and related valve solutions. Established in 1965, the company has built more than four decades of experience in delivering reliability and consistent quality to a diverse customer base. Over the years, the factory has maintained a focus on meeting international standards and industry requirements through a structured approach to quality management and process optimization.
The company operates under an ISO 9001 quality management framework, demonstrating its commitment to systematic quality control, consistent product performance, and continuous improvement. In addition to compliance with ISO standards, the factory’s products meet CE requirements, reflecting adherence to essential health, safety, and environmental directives that are relevant to electrical and electronic components used in fluid control systems. This combination of ISO and CE certification positions the company to serve international markets with confidence in product reliability and regulatory compliance.
A key strength of YUYAO NO.4 INSTRUMENT FACTORY is its in-house research and development capability. The organization maintains a dedicated R&D team that focuses on researching, designing, and customizing valve solutions to accommodate a broad spectrum of customer needs. This capability supports customization and optimization of solenoid valve products to suit specific applications, operating conditions, and industry requirements. The company emphasizes a customer-centric approach, aiming to provide tailored solutions that align with performance expectations, lifecycle requirements, and cost considerations.
Manufacturing strength is further reinforced by the use of advanced processing equipment, including CNC digital controlled lathes and other modern production technologies. Such equipment enables precise manufacturing, tighter tolerances, and scalable production for varied order sizes. The combination of advanced machinery, robust quality practices, and an emphasis on R&D allows the factory to respond to evolving market demands while maintaining the consistency and reliability expected of a well-established supplier.
The product portfolio includes a range of valve solutions designed for diverse applications. The company has cultivated relationships with international partners and customers, exporting to multiple countries and regions across the globe. The global reach is complemented by experience working with renowned organizations and OEM partners, which includes collaborations in scenarios that involve OEM supply arrangements. Through OEM engagements, the factory has demonstrated its capability to integrate its valve products into broader systems and to align with the performance and compatibility requirements of partner brands and end users.
International market engagement is a notable aspect of the company’s profile. With a track record of supplying products to customers in regions such as North America, Europe, and other major markets, the organization has developed a recognition for meeting international quality expectations and delivery schedules. The emphasis on maintaining supply continuity and meeting customer expectations is reflected in its commitment to service and product integrity, which remains a guiding principle for the company’s operations.
YUYAO NO.4 INSTRUMENT FACTORY continues to pursue expansion of its business scope while maintaining a focus on core competencies in valve manufacturing. The company’s stated philosophy centers on delivering superior quality products and reliable service, with customer satisfaction identified as a central objective. This ethos underpins ongoing efforts to improve product design, manufacturing efficiency, and after-sales support to maintain strong relationships with existing customers and attract new partnerships.
In responding to the needs of a global customer base, the factory highlights its capacity for customization, adherence to quality standards, and a readiness to engage in cooperative manufacturing arrangements. The organization aims to provide stable supply of valve products that meet performance criteria, lifecycle expectations, and regulatory considerations across different markets. As a Shanghai-based manufacturer with decades of experience, YUYAO NO.4 INSTRUMENT FACTORY positions itself as a capable supplier of solenoid valve solutions, ready to support industrial applications that rely on precise fluid control and dependable valve performance.
Overall, the company presents a profile of established expertise in solenoid valve manufacturing, supported by quality certifications, a capable in-house development team, modern production equipment, and a track record of international collaboration. With its combination of experience, technical capability, and a commitment to customer satisfaction, the factory aims to serve as a reliable source for valve solutions that are integrated into broader systems and industrial processes.


