Sanjin’s capabilities developed through successive layers of ceramic packaging, precision metal stamping, and advanced hermetic packaging.
Sanjin was founded in March 1997 by Chairman Lihua Ning, a veteran engineer, together with his daughters and a founding team of technical specialists. The company’s earliest work focused on black ceramic packaging components, establishing an early foundation in materials, tooling, and process discipline.
As electronics manufacturing accelerated in the early 2000s, Sanjin applied its micro-stamping and tooling expertise to specialized crystal oscillator lids. Continuous tooling improvement helped the company move from technical development into stable, high-volume production of precision metal components.
In 2020, Sanjin extended its experience in materials, tooling, and precision manufacturing into advanced hermetic packaging. This work supports applications that demand thermal control, airtight sealing, and structural reliability in challenging operating environments.
Precision manufacturing is not only a matter of machines. It is sustained by ownership, continuity, and long-term responsibility.
Critical tooling, fixtures, and process knowledge stay close to production, so engineering intent can become repeatable manufacturing practice.
Stable teams preserve the experience behind each approved process, helping customers receive consistent parts across long-term programs.
Certified systems, ethical operations, and disciplined investment support cleaner, more reliable, and more accountable manufacturing.
Sanjin’s reliability is shaped by engineering practice, demanding customer programs, stable teams, and responsible manufacturing systems.
Sanjin’s engineers work directly with production equipment, tooling, fixtures, and process controls. This keeps engineering intent close to the conditions that determine repeatable manufacturing.
In the lab, teams validate new molding materials for improved thermal dissipation while studying shrinkage behavior caused by different material combinations and heat-management conditions.
Process knowledge is built where design, materials, and production meet.
Long-term manufacturing trust is earned through stable performance, transparent communication, and the ability to meet demanding customer requirements over time.
Sanjin’s experience with leading electronics manufacturers, including NDK, has shaped a practical culture of audit readiness, process discipline, and continuous improvement.
Customer trust becomes durable when every approved process can be repeated.
Precision manufacturing depends on people who understand the details behind approved tools, materials, and process windows.
Sanjin’s long-serving technicians and engineers help preserve the experience behind each program, supporting consistency across long-term production and customer relationships.
Stable teams help turn manufacturing knowledge into repeatable quality.
Sanjin continues to improve certified quality systems, environmental management, materials handling, and disciplined operations so customers can build long-term programs with confidence.
Ethical operations Transparent communication, respect for customer requirements, and disciplined protection of technical and commercial information.
Environmental management Continued improvement in wastewater treatment, energy use, and process controls under ISO 14001-aligned management.
Continuous improvement Quality, safety, and environmental performance treated as ongoing operating responsibilities, not one-time certifications.
Sanjin’s manufacturing experience supports long-term programs with global electronics, semiconductor, sensing, and photonics companies.
Whether you need support for custom parts, want to evaluate our manufacturing capabilities, or have a general project question—drop us a line. Our team appreciates every inquiry and will get back to you promptly.
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