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A man walks past a toilet sign at the Reinvented Toilet Expo showcasing sewerless sanitation technology in Beijing, China November 6, 2018. REUTERS/Thomas Peter Stock Photo - Alamy
![Bill Gates opens 'Reinvented Toilet Expo' in China, promoting biggest sanitation advances in 200 years – GeekWire Bill Gates opens 'Reinvented Toilet Expo' in China, promoting biggest sanitation advances in 200 years – GeekWire](https://cdn.geekwire.com/wp-content/uploads/2018/11/SC14155.jpg)
Bill Gates opens 'Reinvented Toilet Expo' in China, promoting biggest sanitation advances in 200 years – GeekWire
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