CPVC resin polyvinyl chloride (PVC) wanda aka gyara, sabon nau'in robobin injiniya ne. Wannan samfurin fari ne ko kodadde rawaya mara wari maras sako-sako ko foda, mara wari, mara guba. Bayan chlorination na PVC guduro, bond irregularities ƙara polarity karuwa, ƙara solubility na guduro, sinadaran kwanciyar hankali ƙara, haka kara kayan ta zafi juriya, acid, alkali, gishiri, antioxidant da sauran lalata. Inganta inji Properties na lamba murdiya zafin jiki, chloride taro ya karu daga 56.7% zuwa 63-69%, Vicat taushi zafin jiki 72-82 ℃, (har zuwa 90-125), matsakaicin sabis zazzabi har zuwa 110 ° c, zazzabi 95 ℃ dogon lokaci amfani.