There is a difference between the two products. Accelerator DM is polymerized from M, while accelerator D is actually a double formed by the polymerization of two M molecules. When used as a promoter, the promoter DM has a shorter curing time and a slightly slower curing rate. Processing is relatively easy to control. From an application perspective, DM can be used for relatively complex machining, while M can be directly used for very simple machining. Of course, this is not absolute, it mainly depends on the formulas and processes of each factory. To some extent, it can be used interchangeably, but it is difficult to generalize under other conditions that remain unchanged.