Nsps-990.mp4 -

Alternatively, "NSPS" could be part of a different acronym in another context. For instance, in technology, there are various acronyms, but in environmental regulations, NSPS is commonly associated with the EPA's New Source Performance Standards. If that's the case, NSPS-990 might be a specific rule or guidance document within that framework. However, since it's an .mp4 file, it's likely a training video, compliance video, or informational video explaining the NSPS regulations.