Sub CopyF1toF2()
Dim Cel As Range, Col As Integer, Lig As Integer
Col = Columns("D").Column
Lig = 4
Worksheets("Feuil2").Range("D" & Lig & ":Aq" & Lig).ClearContents
For Each Cel In Worksheets("Feuil1").[C6:C25]
If Trim(Cel.Value) <> "" Then
Worksheets("Feuil2").Cells(Lig, Col) = Cel.Value
Worksheets("Feuil2").Cells(Lig, Col + 1) = "Ref."
End If
Col = Col + 2
Next
End Sub