Used as vulcanizing agent and accelerator of natural rubber and synthetic rubber. When used as curing agent, the active sulfur can be decomposed at curing temperature, and its content is about 27%. Safe operation, even if the use of high wear-resistant furnace black without the risk of burning. The curing speed is slow when used alone, and can be improved when used with thiazoles, thiuram, dithiocarbamate and other accelerators. A small amount of sulphur is added for better results. Salicylic acid acid substances promote the decomposition of the product, accelerate the vulcanization rate, but can make the physical properties decreased. No spray, no discoloration, no pollution, easy to disperse. DTDM is used in tires and thick products. The others are used in wire, cable, heat-resistant products or thin products. It is especially suitable for butyl rubber. Vulcanized rubber has good heat resistance, aging resistance and deformation.