Common type door curtains have good transparency.They effectively st-op the loss of cold air or warm air and prevent the invasion of dust and ultraviolet.As a result,they significantly save power consumption of air conditioning systems.They also reduce the dB value of noise,constrain noise from spreading and reduce niose pollution.When used as partition screen,they create multifunctional compartments(operati-ng fields,offices and restrooms)without taking up any space,ensuring the most effective utilization of limited space and improving the comfort in the operation spaces and productivity.