Salt-based powder SE number

Quick answer：

The term 'salt-based powder SE number' seems to refer to a specific identifier or classification number for a type of salt-based powder, possibly in a scientific or industrial context. However, without more specific information, it is difficult to provide a detailed explanation. 'SE number' could stand for a serial number, edition number, or some other specific classification used in the industry. If you can provide more context or details, I can offer a more accurate response.