Used in manufacture of rmbber products such as cable shield,V-belt and synchronous belt. Polychloroprene Rubber CR121n A sulfur-modified polychloroprene rubber with medium crystallication rate. Used in manufacture of rmbber products such as cable shield,V-belt and synchronous belt. It is similar to Du Ponts neoprene type GNA and DenkaPM-40.n Product standard: Q/CHS 27-2005 ...