diff --git a/internal/handlers/export.go b/internal/handlers/export.go
index ec84a53..7b9ab50 100644
--- a/internal/handlers/export.go
+++ b/internal/handlers/export.go
@@ -29,8 +29,9 @@ func NewExportHandler(
 }
 
 type ExportRequest struct {
-	Name  string `json:"name" binding:"required"`
-	Items []struct {
+	Name        string `json:"name" binding:"required"`
+	ProjectName string `json:"project_name"`
+	Items       []struct {
 		LotName   string  `json:"lot_name" binding:"required"`
 		Quantity  int     `json:"quantity" binding:"required,min=1"`
 		UnitPrice float64 `json:"unit_price"`
@@ -54,7 +55,11 @@ func (h *ExportHandler) ExportCSV(c *gin.Context) {
 	}
 
 	// Set headers before streaming
-	filename := fmt.Sprintf("%s (%s) BOM.csv", time.Now().Format("2006-01-02"), req.Name)
+	projectName := req.ProjectName
+	if projectName == "" {
+		projectName = req.Name
+	}
+	filename := fmt.Sprintf("%s (%s) %s BOM.csv", time.Now().Format("2006-01-02"), projectName, req.Name)
 	c.Header("Content-Type", "text/csv; charset=utf-8")
 	c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename))
 
@@ -124,7 +129,8 @@ func (h *ExportHandler) ExportConfigCSV(c *gin.Context) {
 	}
 
 	// Set headers before streaming
-	filename := fmt.Sprintf("%s (%s) BOM.csv", config.CreatedAt.Format("2006-01-02"), config.Name)
+	// For config export, use config name for both project and quotation name
+	filename := fmt.Sprintf("%s (%s) %s BOM.csv", config.CreatedAt.Format("2006-01-02"), config.Name, config.Name)
 	c.Header("Content-Type", "text/csv; charset=utf-8")
 	c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename))