Why

Chinese aquapels are not of the same quality.
Lasts 1 or 2 months instead of 5 months!
How do you recognize them?
If there is no serial number on it (5 digits), it's Chinese.
If the aquapel logo on it is blue, it's Chinese.
Since March 2017, logo "Dangerous material" and "Danger for the lungs" mandatory on it. (Environment Canada)
Canadian emergency number required.
If you find on Ebay or Amazon 6 for $ 35, it's Chinese.
For this prices taxes & Shipping included, it's Chinese.