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After investigation and research, many countries and regions, although there is a lot of rainfall, are still poor and backward, and there are basically no health facilities.For example, cherrapunji in India. This toilet can collect rainwater, through internal physical filtration, to meet the drinking standard. Solar panels are around the water collector, which can convert solar energy into electric energy, provide lighting at night, and contain ultraviolet germicidal lamp to prevent bacteria breeding and virus infection