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Irreversible Photochromic Pigment
Colour appears irreversibly when exposed to UV but not the visible light The irreversible photochromic products show their colours when...
Donna Chen
Jun 19, 20211 min read
1,153 views
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KN95 FFP2 Mask Layer Structure
Schematic presentation of the layer structure of an KN95 FFP2 mask Schematische Darstellung der Schichtstruktur einer KN95 FFP2-Maske
Donna Chen
May 3, 20201 min read
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FFP2 and KN95 face masks/ FFP2 und KN95 Gesichtmaske
CE certified FFP2 and KN95 face masks available at Donna Polymer
Donna Chen
Apr 11, 20201 min read
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Anti-Epidemic Materials against Coronavirus disease (COVID-19)
Anti-Epidemic Materials against Coronavirus disease (COVID-19) Against Coronavirus, we also want to help. Many of the accessories of...
Donna Chen
Mar 19, 20201 min read
5 views
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