Data Matching and Spreadsheet Completion handwork

I'm in need of assistance with matching data from one spreadsheet file to another, based on specific "Dessin" numbers. The project involves filling in the matched data accordingly while leaving cells blank where a match is not found in the second file.

Ideal Skills and Experience:
- Proficiency in handling spreadsheets, particularly .xlsx and .csv files
- Attention to detail and ability to perform handwork meticulously
- Experience in data entry and data matching tasks

Please ensure you are comfortable with these requirements before bidding. Thank you!