Generally, acid accelerator (A) type or neutral accelerator (N) type is the main accelerator, that is, thiazole and sub-sulfonamide accelerator. Chulam is commonly used as the main accelerator in effective and semi-effective curing systems. 

Dithiocarbamate accelerator as the main accelerator, often used in latex products and butyl rubber. The auxiliary accelerator generally uses alkaline accelerator such as DPG, H, etc. Its function is mutual activation, mutual promotion. When subsulfonamides are used as main accelerators, they are generally not used as auxiliary accelerators. Because this kind of accelerator can decompose accelerator M and amine compounds at vulcanization temperature, M is acid type accelerator, amine compound is base type accelerator. 

An acid base (AB) system is formed, but in order to speed up the vulcanization, a small amount of accelerator DPG or cholam accelerator can be used. The dosage of accelerator DPG is generally 10% of the main accelerator. When the dosage is too high, the vulcanization rate will decrease.