KITZ
For over a decade, TongBall Valve has held a strategic, trust-driven partnership with KITZ, Japan's leading valve manufacturer. A century-old enterprise with a global reputation for precision manufacturing and uncompromising reliability, KITZ applies exceptionally stringent standards to its supply chain partners-spanning both technical expertise and quality management systems. Our close collaboration with KITZ is far more than a testament to TongBall's manufacturing prowess; it reflects the deep alignment of two organizations bound by a shared dedication to excellence in precision engineering.


Within this collaborative framework, TongBall Valve is the specialized supplier of ultra-high-precision balls for KITZ's core product lines. We don't merely meet dimensional specifications – we deliver the seamless fusion of superior surface finish and functional performance. Through our proprietary precision grinding and polishing processes, we consistently achieve a mirror-quality surface finish of Ra ≤ 0.1 μm, while maintaining micron-level control over all critical geometric tolerances, including sphericity and concentricity. Every ball we supply passes KITZ's rigorous visual and tactile inspection, meeting a zero-defect standard for surface appearance and texture that matches the exacting benchmarks of premium Japanese craftsmanship.
This uncompromising precision delivers measurable, real-world value. TongBall's components form the critical core that enables KITZ's high-end valves to deliver ultra-low operating torque, lifelong sealing reliability, and exceptionally smooth actuation feel. This is definitive proof that our manufacturing system is fully aligned with KITZ's global quality benchmarks, delivering the critical component reliability that underpins the sterling reputation of KITZ's finished products.




Our partnership with KITZ is an ongoing journey in the relentless pursuit of craftsmanship excellence. It has reinforced our belief that the highest form of OEM partnership is to create precision components that embody the core of our customer's brand promise. We deeply value this relationship, forged on unwavering mutual trust, and remain fully committed to advancing alongside KITZ in the pursuit of uncompromising quality and reliability-together, shaping the future of the industry.
