Engineering Drawings Restoration

I have four floor-plan PDFs that were scanned in low contrast; every line looks grey and the bilingual (Arabic / English) notes are hard to read. I need each page rebuilt so the background is clean, all linework is crisp, and every piece of text appears in solid black. I selected the “advanced cleaning and enhancement” option because simple contrast tweaks won’t be enough—some areas will need careful redrawing or vector tracing to bring back fine detail.

Final files must keep the text editable, not flattened. A layered PDF or a vectorised format generated through Illustrator, AutoCAD, or comparable software is ideal, as long as I can still select and copy both Arabic and English characters. Please preserve the original scale and sheet size while you work.

Acceptance checklist:
• All four pages delivered in high-resolution, text-editable PDF
• Background fully white; no noise or stains
• Lines and hatches restored to consistent weight and clarity
• Arabic and English text legible, selectable, and accurately positioned
• Overall layout and dimensions unchanged from the original scans

If you’ve handled similar drawing restorations—especially with mixed-language text—let me see a sample, and let’s get these plans looking publication-ready.