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  • More on the Solar Water Heater Made of PET Bottles

    Tuesday, October 9th, 2007

    One of the most popular recent posts here on The Temas Blog has been the one about the inexpensive solar water heater being built around Paraná state out of used PET bottles and aseptic packaging (tetrabrik). For reasons I can’t quite work out, it has proven particularly popular in Asia… Given the level of interest, […]

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