Cov roj hmab feem ntau muaj qhov sib txawv ntawm cov nplaim taws.Thiab cov roj hmab uas muaj halogen hauv cov molecule, xws li cov roj hmab neoprene, fluorine roj hmab, thiab lwm yam, muaj qee yam nplaim taws. Yog li ntawd, cov pos hniav chloroprene thiab chlorosulfonated polyethylene uas muaj chlorine atoms nyuaj rau hlawv txawm tias tom qab tshem tawm cov nplaim hluav taws sab nraud, thaum cov roj hmab fluoroprene yog tus kheej tua tag nrho. Cov nplaim hluav taws kub hnyiab (xws li phosphates lossis halogen uas muaj cov tshuaj) tau ntxiv rau hauv qhov sib xyaw kom txhim kho nws cov nplaim hluav taws.
