Structure materials installed in joints of lower and upper structure of the bridge.
The basic functions are
1. Supporting the load from the upper structure, it transfers the load to the lower structure 

    safely, and smoothly.

2. Horizontal movement function is installed corresponding the horizontal conditions such as load,

    temperature change.
3. Rotation function is installed corresponding the load from a upper strucure. It’s the important

    tool sustaning the lifetime of bridge.

1. It is an Earthquake-Proof design which can control the horizontal force and the negative reaction, protects the fall-down of superstructure of bridge And it is a simple design which plays an important role of the bridge bearing with only the polytane disc of function.
2. Lower height & Stabilized Structure.
3. Prominent durability & Economic cost .