Automobile Suspension Parts

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[INQ. NO. 2507M20] DongNam Industrial Co., established in 1991, is a manufacturer specializing in the production of suspension parts such as control arms, stabilizer links, tie rod ends, and ball joints for the aftermarket.
DongNam Industrial is the only manufacturer in Korea of control arms for the aftermarket, supplying products to major OEM parts companies such as CTR, Hi-Q, Halla Holdings, and Valeo. The company aims to provide high-quality products by only using domestic materials and parts in all processes.
Starting in 2025, DongNam Industrial has been releasing new stabilizer links, tie rod ends, ball joints, and rack ends. The company manages major parts and assembly processes internally to build a lineup of core parts for suspension and steering systems, thereby possessing technological prowess, stable quality, and price competitiveness. It is thus stably supplying high-quality products to domestic and international markets.

Control Arm Assembly
As the only domestic manufacturer of aftermarket control arms, DongNam Industrial supplies its products to major OEM automotive parts companies such as CTR, Hi-Q, and Halla-Mando. All raw materials and components used in its production are exclusively sourced from Korea, ensuring the mass production of high-quality control arms, which are supplied both domestically and internationally.

Stabilizer Links, Tie Rod Ends, Ball Joints, Rack Ends
Starting in 2025, DongNam Industrial has launched these products and is now managing most of the components and assembly processes in-house to ensure high-quality mass production. Along with control arms, DongNam Industrial has established a lineup of key components of suspension and steering systems.
“With the knowledge and experience we have accumulated over a long period of time, we develop and produce various high-quality products, and based on this, we aim to be reborn as a company of ‘trust and confidence’ for all of our domestic and global customers,” remarked the company’s CEO.

 
 
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Auto Parts

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[INQ. NO. 2507M13] Since launching its business in 2017, SJ Tech has been striving to produce high-quality auto parts of all kinds that can stay on top with their sharp competitiveness in the industry.
SJ Tech produces excellent products based on IATF16949, and is also machining CNC, MCT itself based on MQ.

Stabilizer Links
Stabilizer links produced by SJ Tech are a vital part of a car’s suspension system, connecting the stabilizer (sway) bar to the suspension arms. They help reduce the impact from road imperfections like potholes. The stabilizer bar connects pairs of wheels, while the links transfer movement to the suspension. Ball joints in the links allow for turning and up-down travel of the suspension.

Ball Joints
Ball joints produced by SJ Tech are spherical bearings that connect control arms to steering knuckles, functioning like a human hip joint. They include a steel bearing stud and socket in a protective casing. The stud is tapered and threaded to fit into the steering knuckle. A rubber boot protects the joint from dirt and allows lubrication movement. Some ball joints have internal springs to reduce vibration. Offset ball joints allow for motion in systems affected by expansion, shocks, and torsional forces.

Tie Rod Ends
Tie rod ends produced by SJ Tech link the steering rack to the knuckle, transferring steering force while allowing pivoting. A rounded, bearing-filled end with a perpendicular bolt fits into the knuckle. A boot protects it from dirt. Despite their simple appearance, tight tolerances are vital for precise handling.
“We use carefully selected products of our top-class lines, each of which is created by craftsmanship, to meet customers’ needs. We will continue striving to develop into a leader in the market for auto parts, good and green enough to live together with people and the environment around us,” remarked the company’s CEO.


 
 
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