diff --git a/B09_Estimation/B09_Estimation_MachineProductivity_Reference.py b/B09_Estimation/B09_Estimation_MachineProductivity_Reference.py
index 311bb893..51fdb5d6 100644
--- a/B09_Estimation/B09_Estimation_MachineProductivity_Reference.py
+++ b/B09_Estimation/B09_Estimation_MachineProductivity_Reference.py
@@ -26,7 +26,6 @@
 from __future__ import annotations
 
 import re
-
 from decimal import Decimal
 from typing import Any
 
@@ -235,9 +234,8 @@ _CAPACITY_UNIT = re.compile(r"[（(]\s*(㎥|m3|㎡|m2|m|ton|t)\s*/\s*(?:hr|시
 
 def _paired_machine(node: dict[str, Any]) -> tuple[str, str, str] | None:
     """그 표에 함께 나오는 기종 — (코드, 이름, 규격). 「유압식백호우 (…0.7㎥)」 → 0201-0070."""
-    from B09_Estimation.B09_Estimation_MachineProductivity import resolve_machine
-
     from B09_Estimation.B09_Estimation_MachineCost import load_machine_catalog
+    from B09_Estimation.B09_Estimation_MachineProductivity import resolve_machine
 
     catalog = load_machine_catalog()
     for table in node.get("tables", []):