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Precision Grinding
High-precision grinding ensures consistent, stable dimensions and elevates surface quality and product performance.
CTI — Taiwan's leading manufacturer of piston rings and engine components. Precision craftsmanship since 1973, today extending into lithium-battery and energy-storage systems.
The precision of a single piston ring measures the character of a company.
“C.T.I.” originally stood for China Traffic Industry; the three letters also derive from the Spanish words Calidad (Quality), Tecnología (Technology) and Innovación (Innovation)
— the very philosophy C.T.I. lives by.
End-to-end control from raw material to shipment; every model is traceable.
Decades of precision grinding, surface treatment and materials engineering.
From combustion to storage — always seeking the next form of power.
C.T.I. was founded in 1973 and is one of Taiwan's earliest piston-ring manufacturers. Starting from a single production line, we built our reputation on precision grinding and materials craftsmanship, supplying the global aftermarket.
For more than five decades our core has stayed the same — making every engine component worthy of trust. Compression rings, oil rings, valves and overhaul kits are exported to more than 110 countries under a single quality standard.
In 2018 we channelled our manufacturing strength into a new field, founding the New Energy Division to develop lithium-battery modules and energy-storage systems — extending power from the engine into the next generation.
High-precision grinding ensures consistent, stable dimensions and elevates surface quality and product performance.
Made from high-grade Japanese imported wire and cast-iron stock for outstanding wear resistance and durability.
From raw-material machining, heat treatment and surface finishing to final assembly — produced and managed entirely in-house.
Operating under the IATF 16949 quality management system, with strict process control through final inspection to ensure consistent quality that meets international standards.
Our New Energy Division develops lithium-battery modules and energy-storage systems (ESS), bringing half a century of manufacturing discipline to the energy transition. The same precision, a different kind of power.
Headquartered in Tainan, Taiwan — shipping to 110+ countries across five continents.
