FFP2.
Aliexpress
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Here are coupons that you can use.
Updated: 03-07-2025
Banggood
Warehouse in Europe 
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Link: 10Pcs KN95 FFP2 4-Layer Face Masks [EU]
$8.45 with coupon: BGwhielabel
Additional Banggood coupons:
1. First page
2. Second page
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – 10Pcs KN95 FFP2 4-Layer Face Masks ($-3)
Price history and price alert
Not enough data to show price history chart… $5.99 is the only recorded price. It was not cheaper than that since we have saved it in DB.
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).