CR (Chloroprene Rubber) thovu, imodzi mwa mphira wachilengedwe woyaka moto, chifukwa imaphatikizapo chlorine, yokhayo ili ndi ntchito yoyaka moto komanso yozimitsa moto. Monga CR yokhala ndi zinthu zazikulu, monga kulimbikitsa, wodzaza, wothira thovu, woyambitsa vulcanizing ndi wothandizira zopangidwa siponji.