... selected Basswood(imported from Russia) or paulownia from China and PVCColorRefer to color swatch, or customerized color availableStylesArched, ... , round, octagon, elliptic, cafe, double over hang and french door.custormised styles availableOpening wayLeveling open, bi-folding opening ... ,Environmental-friendly,energy conservation, exquisite heze kaixin Various types of european rolling shutter windows