Material：
Name:Polyacrylic acid salt
Name:Purified water
Name:PE
Description：Bule/ transparent mesh，breathable，permeable materials
Name:PU film
Name:PET film
Description:Release film
Description:PU film，Hydrogel and PE，PET film
Performance
10cm×10cm
10cm×10cm(28g±10%)
Water absorption water absorption should be greater than or equal to 800%
To the top of the viscous：film slide distance should be not more than 2.5mm
PH：Ph value should be 5.0~9.0
The content of heavy metals：heavy metal content is less than 20ppm
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