Ka lilemo tse nang le boiphihlelo Buka ea
Ethylene propylene ,
e ka fana tsa
Projere .
Ethyylene ka litšebeletso tse ngata
Post . Ntle le lenane la lihlahisoa ka tlase, u ka etsa kopo ea lenane la hau le ikhethang
le beline e bitsoang ethylene e bitsoang epene