CR (Chloroprene roba) ụfụfụ, otu n'ime eke ọkụ retardant roba, n'ihi na ọ na-agụnye chlorine, n'onwe ya nwere a ire ọkụ retardant na fireproofing ọrụ. Dị ka CR na isi ihe, dị ka ume gị n'ụlọnga, na-ejuputa gị n'ụlọnga, foaming gị n'ụlọnga, vulcanizing gị n'ụlọnga na inyeaka. mere ogbo ihe.