Some 133 people were poisoned in the October 1 incident which affected the water supply to more than 9,000 homes in Ruyang county, Henan province.

The Xinhua news agency said Cao Qian, 27, was sentenced at the Luoyang Intermediate People's Court

The court heard that his prime motive was to boost sales of the water-purification devices he marketed.

No-one died in the incident.

TERRA.WIRE