PP, LDPE, LLDPE, HDPE, MDPE, PA6, PA66, these materials are common materials used in filtration.
How to quickly identify which one is PA66? We offer you a simple way: judging by the melting point:

The melting point details are as following:
PP(Polypropylene): 155℃-165℃-
LDPE( Low-density polyethylene): 108℃-126℃
LLDPE( Linear low-density polyethylene): 126℃-136℃
MDPE( Medium Density Polyethylene): 126℃-135℃
PA6(Polyamide 6): 210℃-220℃
PA66(Polyamide 66): 250℃-270℃
 
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