Iziqinisi ze-PVC zidlala indima ebalulekile ekukhiqizweni kwamaphaneli ophansi nawodonga. Ziyiklasi yezithasiselo zamakhemikhali ezixutshwe ezintweni zokwakha ukuqina kokushisa, ukumelana nesimo sezulu, kanye nokusebenza kokulwa nokuguga kwamaphaneli ophansi nawodonga. Lokhu kuqinisekisa ukuthi amaphaneli ophansi nawodonga agcina ukuzinza nokusebenza kuzo zonke izimo zemvelo nezokushisa ezahlukahlukene. Ukusetshenziswa okuyinhloko kweziqinisi kuhlanganisa:
Ukuqina Kokushisa Okuthuthukisiwe:Amaphaneli ophansi nawodonga angase achayeke emazingeni okushisa aphezulu ngesikhathi sokusetshenziswa. Ama-stabilizer avimbela ukuwohloka kwezinto, ngaleyo ndlela andise isikhathi sokuphila kwamaphaneli ophansi nawodonga.
Ukumelana Nesimo Sezulu Okuthuthukisiwe:Iziqinisi zingathuthukisa ukumelana nesimo sezulu kwamaphaneli aphansi nawodonga, ziwenze akwazi ukumelana nemisebe ye-UV, ukushiswa kwe-oxidation, kanye neminye imiphumela yemvelo, kuncishiswe imiphumela yezinto zangaphandle.
Ukusebenza Okuthuthukisiwe Kokulwa Nokuguga:Iziqinisi zisiza ekugcineni ukusebenza kokuvikela ukuguga kwamaphaneli ophansi nawodonga, okuqinisekisa ukuthi agcina ukuzinza nokubukeka kwawo ngesikhathi sokusetshenziswa isikhathi eside.
Ukugcinwa Kwezakhiwo Ezibonakalayo:Iziqinisi zisiza ukugcina izici zomzimba zamaphaneli ophansi nawodonga, okuhlanganisa amandla, ukuguquguquka, kanye nokumelana nokushayisana. Lokhu kuqinisekisa ukuthi amaphaneli ahlala eqinile futhi esebenza kahle ngesikhathi sokusetshenziswa.
Ngamafuphi, iziqinisi zibalulekile ekukhiqizweni kwamaphaneli ophansi nawodonga. Ngokuhlinzeka ngezithuthukisi ezibalulekile zokusebenza, ziqinisekisa ukuthi amaphaneli ophansi nawodonga asebenza kahle ezindaweni ezahlukene kanye nezicelo.
| Imodeli | Into | Ukubukeka | Izici |
| I-Ca-Zn | I-TP-972 | Impuphu | Iphansi le-PVC, ikhwalithi ejwayelekile |
| I-Ca-Zn | I-TP-970 | Impuphu | Uphansi lwe-PVC, ikhwalithi ephezulu |
| I-Ca-Zn | I-TP-949 | Impuphu | Iphansi le-PVC (isivinini esikhulu sokukhipha) |