Fast curing speed accelerator used for CR. Curing rate is similar with ETU, scorch safety is between ETU and DETU.

Known as EUR. Very fast curing speed in CR. The melting point is 72℃, easily dispersed into the rubber.

Slower curing speed than ETU with N-nitrosamine free.

Known as NA-22, an accelerator for fast speed curing, particularly used in CR, CSM, ECO and EPDM.

Mainly used as cross-linking agent to halogenated rubbers such as CIIR, CR and BIIR.