ventilated roller shutter 1)CE,RoHs,TUV,CB,UL 2)Auto-locking device 3)20 years guaranty period 4)ventilated security shutter Shinilion intelligent roller balcony shutter provides you a better life of energy saving, intelligent controlling, safety protection, and perfect visualization! Easy installation, you needn’t to change any structure of your house, office, shop, factory etc. Shinilion roller ...