This bubble like membrane material possesses the function of self-cleaning which can ensure the surface of the membrane no dust. Even if the dust fall on it, it can be totally washed way by natural precipitation. Additionally, membrane material has a good feature of resisting compression. people can even jump on it and “it can even afford a car normally”. In case the outer membrane fractures, it can be repaired or renewed in 8 hours. Those numerous white and twinkling spots strewed on the surface of the water cube are called “plating spots” which can be used to change the direction of light with the effects of heat insulation and astigmatism.

additionally, the water cube covers 7.8 hectares however without any reinforcing steel bar and concrete. Its wall and ceiling are both connected with thin steel pipes with 12000 joints. The membrane structuring pneumatic cushions of merely 2.4 millimeters wrap up the whole construction like skin. The biggest pneumatic cushion is of about 9 m2 while the smallest one is less than 1m2. compared with glass, it can let in more sunshine and air which can keep the swimming pool in a constant temperature and save 30% of the total electric energy.

references:  http://baike.baidu.com/view/779442.html