How affective is ceramics on wastewater treatment bro plus costs effective found tech for 24cents 1000liters AND does anyone know the TED www link YOUTUBE blocked in CHINA can not find anything on TED site why

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How affective is ceramics on wastewater treatment bro plus costs effective found tech for 24cents 1000liters AND does anyone know the TED www link YOUTUBE blocked in CHINA can not find anything on TED site why