// "Nom" Cell
            sheet.createRow(PRODUCT_FIRST_ROW).createCell(PRODUCT_FIRST_COLUMN).setCellValue("Fournisseur :");
            sheet.addMergedRegion(new CellRangeAddress(PRODUCT_FIRST_ROW, PRODUCT_FIRST_ROW, PRODUCT_FIRST_COLUMN, PRODUCT_FIRST_COLUMN + 1));
            CellUtil.setAlignment(sheet.getRow(PRODUCT_FIRST_ROW).getCell(PRODUCT_FIRST_COLUMN), wb, CellStyle.ALIGN_CENTER);
            CellUtil.setFont(sheet.getRow(PRODUCT_FIRST_ROW).getCell(PRODUCT_FIRST_COLUMN), font);
            properties.put(CellUtil.BORDER_TOP, CellStyle.BORDER_MEDIUM);
            properties.put(CellUtil.BORDER_BOTTOM, CellStyle.BORDER_MEDIUM);
            properties.put(CellUtil.BORDER_LEFT, CellStyle.BORDER_MEDIUM);
            properties.put(CellUtil.BORDER_RIGHT, CellStyle.BORDER_MEDIUM);
            CellUtil.setCellStyleProperties(sheet.getRow(PRODUCT_FIRST_ROW).getCell(PRODUCT_FIRST_COLUMN), properties);

            // Supplier Cell
            sheet.getRow(PRODUCT_FIRST_ROW).createCell(PRODUCT_FIRST_COLUMN + 2).setCellValue(suppliersSpinner.getSelectedItem().toString());
            sheet.addMergedRegion(new CellRangeAddress(PRODUCT_FIRST_ROW, PRODUCT_FIRST_ROW, PRODUCT_FIRST_COLUMN + 2, PRODUCT_FIRST_COLUMN + 3));
            CellUtil.setAlignment(sheet.getRow(PRODUCT_FIRST_ROW).getCell(PRODUCT_FIRST_COLUMN + 2), wb, CellStyle.ALIGN_CENTER);
            CellUtil.setCellStyleProperties(sheet.getRow(PRODUCT_FIRST_ROW).getCell(PRODUCT_FIRST_COLUMN + 2), properties);