| Characteristic | Accumulative number of platforms |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
August 2021
Region
China
Survey time period
December 2015 to December 2020
Supplementary notes
Values are the accumulative number of problematic platforms at the end of each year.
The source did not provide a date of publication. The date used here is the access date.
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