Lokhu okulandelayo yizinto ezimbalwa ezijwayelekile zokufaka okuhlangene nezimo zazo ezisebenzayo:
1. I-Polyvinyl Chloride (PVC): Inezindleko eziphansi kakhulu, izakhiwo ezinhle zikagesi nezemishini, kepha ukumelana nokushisa okungekuhle. Ilungele izindawo ezijwayelekile.
2. I-Polyethylene (PE): Inokumelana nokushisa okuhle nokuphikiswa kwamakhemikhali, futhi ilungele izindawo zokushisa -.
III. I-Cross - I-PolyethLene (XLPE): Ifaka izakhiwo zikagesi ezinhle kakhulu kanye nokumelana nokushisa, futhi ilungele amakhebuli aphezulu {{2} vol.
I-4. Irabha: Inobuhlakani obuhle kakhulu futhi igqoke ukumelana, futhi ilungele izindawo ezinokunyakaza okuvame njalo noma ngaphandle.
V. I-Silicone Rubber: Ukushisa - ukumelana, imisebe - ukumelana, kufanelekile ezindaweni ezikhethekile.
