Would you like to swap your used TOTOBOBO filters with new ones?
We are helping a research group at Nanjing University to study the harmful material in the filter. Two sub-groups will analyse the organic material and the heavy metals trapped in the used filters.
If you are using the Totobobo mask in China, this is your chance to help.
What we need you to do is to send your used filter to Totobobo China in Beijing, along with the following details:
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Details of the used filter pair (example)
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Date: 2013-12-12 ~ 2013-12-14
Duration: 7 hours
Location: Beijing, Haiding
PM2.5 range: 200 ~ 300
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The research team will publish the result at the end of the study. To support this meaningful study, we will issue 60 pairs of F96 filter to swop with the first 60 pairs of useful filter samples.
Below is more detail instruction in Chinese:
