![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/1.jpg)
Concrete supporting pole for mounting anchor bolt and manufacturing method thereof
![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/2-1.jpg)
Concrete pillar having an opening for installing the safety device and manufacturing method thereof
![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/4-1.jpg)
Long axis reinforced concrete telegraph pole and manufacturing method thereof
![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/5.jpg)
Design concrete pole and manufacturing method thereof
![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/6.jpg)
Concrete pole polishing equipment
![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/8.jpg)
Utility poles for road facilities
![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/9.jpg)
Pair coupling pipe,
Manufacturing method of double-hole reinforced concrete pipe using the pair coupling pipe
![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/10.jpg)
Drain pipe using centrifugal force
![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/11.jpg)
Drain pipe formboard using centrifugal force and manufacturing method of drain pipe there of
![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/12-1.jpg)
Inner mold
![특허증 patents](http://onegiup.com/wp-content/uploads/2017/08/13.jpg)
Concrete pole
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One Body Pillar for Pole Structure
![design_patents_usa](http://onegiup.com/wp-content/uploads/2017/10/design_patents_usa.png)
The U.S. Patent