Classification by vulcanization rate
Ultra-high speed: disulfide, xanthan acid salts
Overspeed Level: Autumn Lamb
Quasi-overspeed level: thiazole, Secondary yellow amide type
Medium-Speed class: Guanidine
Slow-speed class: aldehyde amine, thiourea
Classification by acid and alkalinity
Acid promoter: Thiazole, Autumn lamb, disulfide carbamate, xanthan acid salts.
Alkaline promoter: guanidine and aldehyde amine.
Neutral promoter: Secondary yellow amide and Thiourea type.