1.filter harmful ultraviolet ray 2.noise-free and health 3.enhance the security 4 ... time. It is low power consumption and noise-free, the dlectricity saving-ratio reaches 50%.White transparent ... , and provide a barrier for dust and ultraviolet ray. The curtain(saffron) works as a shield because ... any electric element. With low cost, economy, noise-free, it enhances the efficiency of freezing, and the ...