PE is an abbreviation for polyethylene, usually abbreviated as HDPE (High Density Polyethylene), MDPE (Medium Density Polyethylene), and LDPE (Low Density Polyethylene).
Citing this page:
Generalic, Eni. Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.