The GRZ (Gangrong) FFP2 particle-filtering flat-fold mask passed our particulate filtration efficiency machine test with a score of 99.65%. A defining characteristic of N95 and N95-style masks is they have either head straps or head ties (no ear loops).
Mask breathability is determined by airflow resistance, which we measure in pascals. The target for adults should be around 150, and the target for children should be close to 100. The airflow resistance of this mask is 156.
This mask has a very strong ammonia odor. FYI: the FFP2 distinction is a European standard. A FFP2 mask is very similar to a N95 and is a step up from a surgical mask.
We found this mask on Amazon. Its country of origin is China. Check out our video review for more details.