diff --git a/module-mdm/src/main/java/com/ether/pms/mdm/repository/SparePartCategoryRepository.java b/module-mdm/src/main/java/com/ether/pms/mdm/repository/SparePartCategoryRepository.java
new file mode 100644
index 0000000..3cacd91
--- /dev/null
+++ b/module-mdm/src/main/java/com/ether/pms/mdm/repository/SparePartCategoryRepository.java
@@ -0,0 +1,15 @@
+package com.ether.pms.mdm.repository;
+
+import com.ether.pms.mdm.entity.SparePartCategory;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+@Repository
+public interface SparePartCategoryRepository extends JpaRepository<SparePartCategory, UUID> {
+    List<SparePartCategory> findByParentIdIsNull();
+    List<SparePartCategory> findByParentId(UUID parentId);
+    Optional<SparePartCategory> findByCategoryCode(String categoryCode);
+}
\ No newline at end of file
diff --git a/module-mdm/src/main/java/com/ether/pms/mdm/repository/SparePartRecordRepository.java b/module-mdm/src/main/java/com/ether/pms/mdm/repository/SparePartRecordRepository.java
new file mode 100644
index 0000000..90f3f31
--- /dev/null
+++ b/module-mdm/src/main/java/com/ether/pms/mdm/repository/SparePartRecordRepository.java
@@ -0,0 +1,15 @@
+package com.ether.pms.mdm.repository;
+
+import com.ether.pms.mdm.entity.SparePartRecord;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+@Repository
+public interface SparePartRecordRepository extends JpaRepository<SparePartRecord, UUID> {
+    List<SparePartRecord> findBySparePartIdOrderByRecordDateDesc(UUID sparePartId);
+    Optional<SparePartRecord> findTopBySparePartIdOrderByRecordDateDesc(UUID sparePartId);
+    List<SparePartRecord> findByRelatedOrderId(UUID relatedOrderId);
+}
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diff --git a/module-mdm/src/main/java/com/ether/pms/mdm/repository/SparePartRepository.java b/module-mdm/src/main/java/com/ether/pms/mdm/repository/SparePartRepository.java
new file mode 100644
index 0000000..beee68b
--- /dev/null
+++ b/module-mdm/src/main/java/com/ether/pms/mdm/repository/SparePartRepository.java
@@ -0,0 +1,21 @@
+package com.ether.pms.mdm.repository;
+
+import com.ether.pms.mdm.entity.SparePart;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+@Repository
+public interface SparePartRepository extends JpaRepository<SparePart, UUID> {
+    List<SparePart> findByProjectIdAndStatus(UUID projectId, SparePart.Status status);
+    List<SparePart> findByCategoryId(UUID categoryId);
+    Optional<SparePart> findBySparePartCode(String sparePartCode);
+    boolean existsBySparePartCode(String sparePartCode);
+
+    @Query("SELECT s FROM SparePart s WHERE s.projectId = :projectId AND s.currentStock <= s.safeStock")
+    List<SparePart> findLowStockParts(@Param("projectId") UUID projectId);
+}
\ No newline at end of file