Nea edidi so yi yɛ nneɛma pii a wɔtaa de siw nsu ano ne tebea horow a ɛfa ho:
1. Polyvinyl chloride (PVC) : Ɛwɔ ahoɔden a ɛba fam koraa, anyinam ahoɔden ne mfiridwuma mu nneɛma pa, nanso ɔhyew a ɛko tia no nyɛ papa. Ɛfata ma nneɛma a atwa yɛn ho ahyia nyinaa.
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iii. Cross-Linked Polyethylene (XLPE) : Ɛwɔ anyinam ahoɔden su a ɛkyɛn so ne ɔhyew a ɛko tia, na ɛfata ma ɛkorɔn-voltage nhama.
4. Rɔba: Ɛwɔ elasticity a ɛkyɛn so ne wear resistance, na ɛfata ma nneɛma a atwa yɛn ho ahyia a ɛtaa keka ne ho anaasɛ ɛwɔ abɔnten.
V. Silicone rɔba: ɔhyew{1}}ɛko tia, mframa a ɛbɔ-ɛko tia, ɛfata ma nneɛma titiriw a atwa yɛn ho ahyia.
