In the past, car centers have built and operated wide entrances through regular shutter doors that were opened and closed up and down. However, due to the nature of the shutter door, it is difficult to open and close it whenever necessary. If you close it, visitors often recognize it as not operating through an opaque shutter door. So once we opened it, we didn't close it until the end of business hours. As a result, even when the weather was cold, hot, rainy, snowy, or windy, workers used to accept it as if they were working outside, and had to leave it open even when they weren't working.

As a result, the lost heating and cooling energy and costs were also formidable, and the inefficient working speed caused disadvantages.

Due to these disadvantages, it is easy to open and close when necessary by installing folding doors that can be opened and closed from side to side, preventing changes in ambient temperature and weather, and also reducing costs by blocking cooling and heating energy losses depending on temperature. Workers can also work indoors blocked from the outside, so it works at an efficient pace in a pleasant environment.