... tubeMade from Vycor glass (95% silica, high temperature and thermal shock resistant) and copper / aluminum absorption.Reflective aluminum panels, High ... in drinking boiled water in the suburbs.Suitable for consumer groups• Eco living, home energy saving• Picnics, BBQs, outdoor events ... solar thermal bottle, it has two parts: vacuum tube and reflector, vacuum tube can absorb solar heat, meanwhile, two ...