http://www.youtube.com/watch?v=aXjMAItCMl0
Fresnel Lens solar water filtration systems offer an off grid option to clean water This solar distiller can deliver .5 GPH The Fresnel lens concentrates sun…
http://www.youtube.com/watch?v=aXjMAItCMl0
Fresnel Lens solar water filtration systems offer an off grid option to clean water This solar distiller can deliver .5 GPH The Fresnel lens concentrates sun…