Za chinthu ichi
- Vulcanization processing imapangitsa pamwamba pa magolovesi bwino, sikophweka kumamatira pamodzi
- Mapangidwe apadera a manja kuti mutonthozedwe, Mapangidwe apadera a kanjedza kuti apewe kuterera bwino, kugwira bwino kwambiri, wothandizira wabwino pakuyeretsa kukhitchini
- Malo a Acid ndi alkali okhala ndi zotchinga zabwino, kuteteza manja ku mankhwala