SLDDRW (file format)
From GICLWiki
Extension: .slddrw
System: SolidWorks Drawing File
Extension: SLDDRW
Program and/or Extension Function: SolidWorks Drawing Document
Company: SolidWorks Corporation
Specific Notes: 3D CAD software and productivity enhancement tools.
File Classification: CAD/CAM
Associated Links: SolidWorks Viewer
Identifying Characters: (None or Unknown)
Program ID: SldDraw.Document
General Notes: (None)