Cov khoom ntawm daim kab xev kab mob tseem ceeb muaj ob hom: yas (polymer) thiab ntawv. Daim kab xev xaum npog daim ntawv yog tsim los ntawm cov khoom yas. Lub hauv paus tsev khw yog PC (Polycarbonate, polycarbonate), daim kab xev tsho, PS (Polystyrene, polystyrene) thiab ABS (acrylonitrile-butadiene-styrene copolymer resin). Cov tawv, ntxiv nrog rau ib qho me me ntawm daim ntawv kab xev npaj tau los ntawm tus tsiaj, APET thiab lwm yam ntaub ntawv. Cov ntawv thaij duab thev naus laus zis yog npaj los ntawm cov ntaub ntawv los yog cov ntaub ntawv PE.
Cov ntaub ntawv hauv PC yog pom los ntawm cov neeg kho tshuab muaj zog, zoo transparency, ruaj ntseg stability zoo, siab iav hloov kev kub thiab zoo kub cev. Tus neeg kho tshuab zog ntawm PS khoom siv tsawg dua li ntawm PC khoom, yog li qee lub sij hawm ABS cov ntaub ntawv tau muab rau hauv ib daim ntawv lo lus peb-txheej los txhim kho lub zog tensile ntawm daim kab xev kab xev. Tus neeg kho tshuab lub zog ntawm cov khoom PET yog nyob ze ntawm lub PC, tab sis vim yog cov ntaub ntawv crystalline, qhov kev dimension dimension yog pluag.
