Roba roba bụ ngwaahịa a na-eji ọla ma ọ bụ ihe ndị ọzọ dị ka isi, kpuchie ya na roba.
Igwe na-egbu egbu, na-eguzogide, na-agbaze, na-agbagide, na-agbagide elu, na-eguzogide, na-eguzogide ya na-ebido na-eguzogide, na-eguzogide ya na -65 ℃ -140 ℃ ruo ogologo oge, Ezigbo mkpuchi arụmọrụ, nke ejiri na igwe na-ebipụta plasticcing, tonwer, ubi ebumnuche zuru ezu.

Epdm: S501A; S50a; 3062; J-2080; Ter 4047; Tar 433;
Cr: SN121; SN122; SN123; SN232; SN232; SN232; SN232; SN232; SN321; SN321;