Lives in Africa, the long time, we have been unable to obtain the clean tap water since very much The scholars found one method from Switzerland which they develops, enables us greatly to improve our water quality, with one very simple way Is the solar energy tap water disinfection, so long as let bottled Shui Fang on the roof the sun expose to the sun may drink to the certain time with! But the hope day cannot have the cloud, perhaps you are versatile God, that helps us to pull out the fog to see the blue sky! In these five days, hoped we can store up suffice the full quantity water! The mouse clicksopens out the fog operation.