Mapangidwe azinthu zamawaya ndi chingwe, ambiri, amatha kugawidwa m'zigawo zinayi zazikuluzikulu: waya, kutchinjiriza, kutchingira ndi kutchingira.
Zida za mphira zitha kugwiritsidwa ntchito pakutchinjiriza ndi kuwotcha.

Ndibwino kuti mukuwerenga EPDM pawiri ,CR pawiri
EPDM: S505A;S512F;3062E;J-3060P;TER 4033;TER 4044
CR: SN121;SN122;SN123;CR111;CR112;SN231;SN23;SN2CR32CR32;SN231;SN232;