This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 Waste material world problem. Less developed countries to re-use waste PET bottles. Make clean drinking water. New vegetables are grown. To obtain clean water. Please see http://www.flatrock.org.nz/topics/environment/water.htm