Polystyrene yog ib qho plastics uas pom tau ntau dua hauv cov khoom ntau yam, los ntawm cov khoom siv rau tso cov noj thiab cov khoom siv rau tso cov cua tshuab. Rau kev tsim polystyrene, cov neeg tsim khoom siv ib qho khoom uas hu ua "blowing agent." Khoom no yog qhov tshwj xeeb uas pab tsim cov qhov tshuab leej nkaus hauv polystyrene, uas pab ua rau nws nyob hauv qhov nyooj dua thiab muaj qhov ua rau nws tshuab zoo dua. Kev xaiv cov khoom uas ua rau muaj qhov tshuab tseem ceeb yog qhov nyuaj, tab sis nws yog qhov tseem ceeb rau kev ua tau zoo ntawm koj cov khoom. Cov thawj tswv li Maijisen tsim cov khoom uas ua rau polystyrene muaj qhov tshuab zoo tshaj plaws rau cov neeg siv khoom kom lawv tau cov khoom uas lawv xav tau.
Thaum xaiv lub tshuab tshuab rau polystyrene, muaj ntau yam uas koj yuav tsum xav txog. Thaum kawg, koj yuav tsum paub seb koj yuav tsim qhov polystyrene li cas. Muaj ob qhov loo tshwj xeeb: polystyrene tshuab (EPS) thiab polystyrene tshuab los ntawm lub tshuab (XPS). EPS yog nyob hauv qhov nyoo thiab tseem ceeb rau kev kho cov khoom, thaum XPS yog nyob hauv qhov nyoo thiab siv rau kev kho cov khoom tshuab. Txhua qhov loo yuav tsum siv lub tshuab tshuab ib yam, kom nws ua haujlwm zoo. Ko j kuj yuav tsum xav txog cov qhov chaw uas koj xav tau rau cov khoom thaum tom qab. Lub tshuab tshuab ib qho yuav ua cov kab tshuab li qhov nyoo, uas yuav ua rau cov khoom nyoo thiab ua rau nws tsis muaj txoj haujlwm zoo. Lwm qhov tshuab tshuab yuav ua cov kab tshuab loo, uas yuav ua rau cov khoom muaj txoj haujlwm zoo thiab ua rau nws nyoo. Piv txwv li, siv lub tshuab tshuab zoo yuav pab ua rau cov polystyrene ntawd zoo dua.