The distillation of water has become a necessity to reduce the demand for drinking water and many of the poor regions in the world do not have the means to have this technique therefore they use solar distillation. which is a simple economic and environmental technique . This technique suffers from low productivity. which is why researchers are trying to improve solar stills. https://www.jmannino.com/hot-price-Mules-Lupita-Trasparenti-hot-value/