Kugadzira namatidza yezvikamu zana nehuremu (pbw) zvichibva pane:
| Rabha yeGraft-Chloroprene(zvakawanda zverabha zvinenge 16%) | 3-5% pbw RF |
| Rabha yechloroprene(zvakawanda zverabha zvinenge 20%) | 5-7% pbw RF |
| Hydroxyl polyurethane(huwandu hwepolyurethane hunosvika 15%) | 3-5% pbw RF |
Kazhinji, huwandu hwechinhu chinonamira chinoshandiswa hunosvika 3% ~ 5% yechinamira, asi kana hunyoro mumhepo hukawedzera, huwandu hwechinhu chinonamira chinofanirwa kuwedzerwa zvishoma. Zvisinei, ndapota musawedzera kupfuura 10%. Panguva imwe chete, kana tembiricha yemumba ikawedzera, kumhanya kwechinhu chinonamira nechinonamira kunowedzerawo. Nokudaro, huwandu hwechinhu chinonamira chinofanirwa kudzikiswa.









