DongHwa Tech Co., Ltd.

As a specialist in wheel balance weights for cars, Dong-Hwa Tech is a certified exclusive provider for Korea's four major carmakers (Hyundai, KIA, GM Daewoo and Ssangyong).

Through Yoentae Dong-Hwa. Inc. a China plant, Dong-Hwa Tech is supplying product for Chinese carmakers and expanding to the world market. With our devoted research and development, Dong-Hwa Tech gained six patents on cars and 11 patents on new devices and designs.

As a result of progressive efforts to improve quality and environments, Dong-Hwa Tech passed strict subcontractor tests from Hyundai, KIA, GM Daewoo. Furthermore, Dong-Hwa Tech proved its steadfastness with ISO/TS 16949, 5-STAR (3.5), SQ mark, and ISO 14001.

Wheel Balance
When weight unbalance occurs after assembling wheels and tires, the spinning wheels with the centrifugal force variations causes vibration, and this vibration transfers to the steering wheel and body through the steering mechanism.

Since the centrifugal force is proportional to revolution speed at higher speed, it is divided into static and dynamic balance.

When such balances are not stable, the risk of accidents increases at high-speed driving.

If the steering wheel vibrates at a certain speed (90~140km) or wheels move to the right or left side even at lower speed, unbalanced wheel weight should be corrected.

If this is left unattended, tires are worn away unevenly and make it impossible to drive a car at right speed. Moreover, continued vibration loosens connections of each part in a long run, and it reduces life of a car due to exhaustion.