| Manufacturer Name | nvarchar(max) | Official POLIS display name for the manufacturer. Determination method: use the accepted POLIS-facing name for the manufacturer row. |
| Faction Url | nvarchar(max) | Parent or associated POLIS faction page URL. Determination method: use the POLIS faction page for the faction the manufacturer belongs to. |
| Begin Year | int | First active POLIS year. Determination method: use the earliest year the manufacturer exists in POLIS scope. |
| End Year | int | Final active POLIS year. Determination method: use the last year the manufacturer exists in POLIS scope; use the POLIS horizon when it continues through the model. |
| Manufacturer Url | nvarchar(max) | POLIS manufacturer page URL for that row. Determination method: use the published POLIS manufacturer page URL for the same manufacturer. |
| Notes | nvarchar(max) | Optional clarification. Determination method: leave NULL unless a specific source, edge case, or scope decision needs to be preserved. |