When looking from the outside to inside or while enjoying time indoors, the upper part can be open while the lower part is closed
* Protection of privacy and interior space by closing lower part when looking outside
* Prevention of discoloration and life shortening of carpet, furniture, artworks and etc by blockage of light
* Energy saving by environmental friendly method of heat insulation of light and shade formation
* Provides stability in the lower floor of a building, and also in the higher floor causes dizziness by closing the lower part
* Comfortable interior atmosphere by the soft light filtered in through the closed lower part
Protection of the eyesight and improving of concentration by light blockage of closed lower part, helps filter in through closed lower part even while reading a book, when the upper part is open, you can also comfortably work on the computer and watch TV
* Registration of 8 Patents, Application of 5 Patents
* Registration of 8 Designs, Application of 4 Designs
* Registration of 18 Brands