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Wasteless dustbin can utilise any organic waste to gernerate electricity
and fertilizer.There are microorganisms that can turn rubbish into methane
in high-speed at the bottom of fertilizer box.Then methane gernerate
electricity that was absorbed by the battery.After the battery finishes
charging,some liquid is left.Those liquid is a kind of green fertilizer which
can fertilise farmland and greenbelt in city.