diff --git a/WebContent/WEB-INF/view/productionplanning/mBomHeaderPopup.jsp b/WebContent/WEB-INF/view/productionplanning/mBomHeaderPopup.jsp
index 056ea9f..066081b 100644
--- a/WebContent/WEB-INF/view/productionplanning/mBomHeaderPopup.jsp
+++ b/WebContent/WEB-INF/view/productionplanning/mBomHeaderPopup.jsp
@@ -21,6 +21,32 @@ body, html {
 }
 </style>
 <script>
+// 가공업체 목록 (OBJID -> 업체명 변환용)
+var vendorMap = {};
+
+// 가공업체 목록 로드
+function loadVendorList() {
+	$.ajax({
+		url: '/common/getClientMngList.do',
+		method: 'POST',
+		async: false,
+		dataType: 'json',
+		success: function(data) {
+			if(data && data.length > 0) {
+				data.forEach(function(item) {
+					vendorMap[item.CODE_ID] = item.NAME;
+				});
+			}
+		}
+	});
+}
+
+// OBJID를 업체명으로 변환
+function getVendorName(objid) {
+	if(!objid) return '';
+	return vendorMap[objid] || objid;
+}
+
 // confirm/alert 헬퍼 함수
 function showConfirm(options) {
 	if(typeof options === 'string') {
@@ -50,6 +76,9 @@ $(function(){
 	
 	$('.select2').select2();
 	
+	// 가공업체 목록 로드
+	loadVendorList();
+	
 	// 페이지 로드 시 프로젝트 정보로 검색 필드 자동 입력
 	<c:if test="${not empty info}">
 		$("#search_part_no").val("${info.PART_NO}");
@@ -610,9 +639,18 @@ function generateUpdateHistoryTable(beforeData, afterData) {
 			for(var j = 0; j < fieldChanges.length; j++) {
 				var fc = fieldChanges[j];
 				var fieldNameKr = getFieldNameKorean(fc.field);
+				
+				// 가공업체 필드는 OBJID를 업체명으로 변환
+				var beforeVal = fc.before;
+				var afterVal = fc.after;
+				if(fc.field === 'PROCESSING_VENDOR' || fc.field === 'processingVendor') {
+					beforeVal = beforeVal ? getVendorName(beforeVal) : null;
+					afterVal = afterVal ? getVendorName(afterVal) : null;
+				}
+				
 				html += "<strong>" + fieldNameKr + ":</strong> ";
-				html += "<span class='before-value'>" + (fc.before || "(없음)") + "</span> → ";
-				html += "<span class='after-value'>" + (fc.after || "(없음)") + "</span>";
+				html += "<span class='before-value'>" + (beforeVal || "(없음)") + "</span> → ";
+				html += "<span class='after-value'>" + (afterVal || "(없음)") + "</span>";
 				if(j < fieldChanges.length - 1) html += "<br>";
 			}
 			
@@ -706,7 +744,7 @@ function oldGenerateUpdateHistoryTable(beforeData, afterData) {
 			html += "<td>" + (item.rawMaterialSize || "") + "</td>";
 			html += "<td>" + (item.rawMaterialPartNo || "") + "</td>";
 			html += "<td>" + (item.requiredQty || "") + "</td>";
-			html += "<td>" + (item.processingVendor || "") + "</td>";
+			html += "<td>" + (item.processingVendorName || item.processingVendor || "") + "</td>";
 			html += "<td>" + (item.processingDeadline || "") + "</td>";
 			html += "<td>" + (item.grindingDeadline || "") + "</td>";
 			html += "<td>" + (item.orderQty || "") + "</td>";
@@ -728,7 +766,7 @@ function oldGenerateUpdateHistoryTable(beforeData, afterData) {
 			html += "<td>" + (item.rawMaterialSize || "") + "</td>";
 			html += "<td>" + (item.rawMaterialPartNo || "") + "</td>";
 			html += "<td>" + (item.requiredQty || "") + "</td>";
-			html += "<td>" + (item.processingVendor || "") + "</td>";
+			html += "<td>" + (item.processingVendorName || item.processingVendor || "") + "</td>";
 			html += "<td>" + (item.processingDeadline || "") + "</td>";
 			html += "<td>" + (item.grindingDeadline || "") + "</td>";
 			html += "<td>" + (item.orderQty || "") + "</td>";
@@ -755,7 +793,7 @@ function oldGenerateUpdateHistoryTable(beforeData, afterData) {
 			html += "<td" + (changedFields['rawMaterialSize'] ? " class='field-changed'" : "") + ">" + (mod.after.rawMaterialSize || "") + "</td>";
 			html += "<td" + (changedFields['rawMaterialPartNo'] ? " class='field-changed'" : "") + ">" + (mod.after.rawMaterialPartNo || "") + "</td>";
 			html += "<td" + (changedFields['requiredQty'] ? " class='field-changed'" : "") + ">" + (mod.after.requiredQty || "") + "</td>";
-			html += "<td" + (changedFields['processingVendor'] ? " class='field-changed'" : "") + ">" + (mod.after.processingVendor || "") + "</td>";
+			html += "<td" + (changedFields['processingVendor'] ? " class='field-changed'" : "") + ">" + (mod.after.processingVendorName || mod.after.processingVendor || "") + "</td>";
 			html += "<td" + (changedFields['processingDeadline'] ? " class='field-changed'" : "") + ">" + (mod.after.processingDeadline || "") + "</td>";
 			html += "<td" + (changedFields['grindingDeadline'] ? " class='field-changed'" : "") + ">" + (mod.after.grindingDeadline || "") + "</td>";
 			html += "<td" + (changedFields['orderQty'] ? " class='field-changed'" : "") + ">" + (mod.after.orderQty || "") + "</td>";
diff --git a/WebContent/WEB-INF/view/productionplanning/mBomPopupLeft.jsp b/WebContent/WEB-INF/view/productionplanning/mBomPopupLeft.jsp
index 7f13ee8..e59e32c 100644
--- a/WebContent/WEB-INF/view/productionplanning/mBomPopupLeft.jsp
+++ b/WebContent/WEB-INF/view/productionplanning/mBomPopupLeft.jsp
@@ -137,11 +137,11 @@ function fn_loadSupplyVendorList() {
 		dataType: 'json',
 		success: function(data) {
 			if(data && data.length > 0) {
-				// {id: CODE_NAME, text: CODE_NAME} 형태로 변환 (Select2용)
+				// {id: CODE_ID(OBJID), text: NAME(CLIENT_NM)} 형태로 변환
 				supplyVendorList = data.map(function(item) {
 					return {
-						id: item.CODE_NAME,
-						text: item.CODE_NAME
+						id: item.CODE_ID,
+						text: item.NAME
 					};
 				});
 				console.log("가공업체 목록 로드 완료:", supplyVendorList.length + "개");
@@ -172,13 +172,13 @@ function createSelect2Editor(options) {
 		options.forEach(function(opt) {
 			var option = document.createElement("option");
 			if(typeof opt === 'object') {
-				option.value = opt.id || opt.value || opt;
-				option.text = opt.text || opt.label || opt;
+				option.value = opt.id || opt.value || '';
+				option.text = opt.text || opt.label || '';
 			} else {
 				option.value = opt;
 				option.text = opt;
 			}
-			if(option.value === cellValue) {
+			if(option.value == cellValue) {
 				option.selected = true;
 			}
 			select.appendChild(option);
@@ -192,7 +192,13 @@ function createSelect2Editor(options) {
 				dropdownAutoWidth: true,
 				placeholder: '선택',
 				allowClear: true,
-				dropdownParent: $('body')  // 드롭다운이 셀 밖으로 나오도록
+				dropdownParent: $('body'),  // 드롭다운이 셀 밖으로 나오도록
+				templateResult: function(data) {
+					return data.text;
+				},
+				templateSelection: function(data) {
+					return data.text;
+				}
 			});
 			
 			$(select).on('select2:select select2:clear', function(e) {
@@ -647,6 +653,23 @@ function fn_initGrid() {
 			editor: function(cell, onRendered, success, cancel, editorParams) {
 				// 가공업체 목록 Select2 에디터
 				return createSelect2Editor(supplyVendorList)(cell, onRendered, success, cancel, editorParams);
+			},
+			formatter: function(cell) {
+				var value = cell.getValue();
+				
+				// 저장된 값이 없으면 기본값 '5001'(RPS) 설정
+				if(value === undefined || value === null || value === '') {
+					value = '5001';
+					cell.getRow().update({PROCESSING_VENDOR: value}, false);
+				}
+				
+				// OBJID로 업체명 조회하여 표시
+				for(var i = 0; i < supplyVendorList.length; i++) {
+					if(supplyVendorList[i].id == value) {
+						return supplyVendorList[i].text;
+					}
+				}
+				return value;
 			}
 		},
 			/* 주석처리: 가공납기, 연삭납기 컬럼
diff --git a/src/com/pms/mapper/productionplanning.xml b/src/com/pms/mapper/productionplanning.xml
index f883803..ed502b6 100644
--- a/src/com/pms/mapper/productionplanning.xml
+++ b/src/com/pms/mapper/productionplanning.xml
@@ -3960,48 +3960,50 @@
 	<!-- M-BOM 상세 리스트 조회 (이력용) -->
 	<select id="getMbomDetailList" parameterType="map" resultType="com.pms.common.UpperKeyMap">
 		SELECT 
-			OBJID,
-			MBOM_HEADER_OBJID,
-			PARENT_OBJID,
-			CHILD_OBJID,
-			SEQ,
-			LEVEL,
-			PART_OBJID,
-			PART_NO,
-			PART_NAME,
-			QTY,
-			UNIT,
-			SUPPLY_TYPE,
-			MAKE_OR_BUY,
-			RAW_MATERIAL_PART_NO,
-			RAW_MATERIAL_SPEC,
-			RAW_MATERIAL,
-			RAW_MATERIAL_SIZE,
-			PROCESSING_VENDOR,
-			PROCESSING_DEADLINE,
-			GRINDING_DEADLINE,
-			REQUIRED_QTY,
-			ORDER_QTY,
-			PRODUCTION_QTY,
-			STOCK_QTY,
-			SHORTAGE_QTY,
-			NET_QTY,
-			PO_QTY,
-			VENDOR,
-			UNIT_PRICE,
-			TOTAL_PRICE,
-			CURRENCY,
-			LEAD_TIME,
-			MIN_ORDER_QTY,
-			PROPOSAL_DATE,
-			STATUS,
-			REMARK
+			MD.OBJID,
+			MD.MBOM_HEADER_OBJID,
+			MD.PARENT_OBJID,
+			MD.CHILD_OBJID,
+			MD.SEQ,
+			MD.LEVEL,
+			MD.PART_OBJID,
+			MD.PART_NO,
+			MD.PART_NAME,
+			MD.QTY,
+			MD.UNIT,
+			MD.SUPPLY_TYPE,
+			MD.MAKE_OR_BUY,
+			MD.RAW_MATERIAL_PART_NO,
+			MD.RAW_MATERIAL_SPEC,
+			MD.RAW_MATERIAL,
+			MD.RAW_MATERIAL_SIZE,
+			MD.PROCESSING_VENDOR,
+			COALESCE(CM.CLIENT_NM, MD.PROCESSING_VENDOR) AS PROCESSING_VENDOR_NAME,
+			MD.PROCESSING_DEADLINE,
+			MD.GRINDING_DEADLINE,
+			MD.REQUIRED_QTY,
+			MD.ORDER_QTY,
+			MD.PRODUCTION_QTY,
+			MD.STOCK_QTY,
+			MD.SHORTAGE_QTY,
+			MD.NET_QTY,
+			MD.PO_QTY,
+			MD.VENDOR,
+			MD.UNIT_PRICE,
+			MD.TOTAL_PRICE,
+			MD.CURRENCY,
+			MD.LEAD_TIME,
+			MD.MIN_ORDER_QTY,
+			MD.PROPOSAL_DATE,
+			MD.STATUS,
+			MD.REMARK
 		FROM 
-			MBOM_DETAIL
+			MBOM_DETAIL MD
+		LEFT JOIN CLIENT_MNG CM ON MD.PROCESSING_VENDOR = CM.OBJID::VARCHAR
 		WHERE 
-			MBOM_HEADER_OBJID = #{mbomHeaderObjid}
-			AND STATUS = 'ACTIVE'
-		ORDER BY SEQ
+			MD.MBOM_HEADER_OBJID = #{mbomHeaderObjid}
+			AND MD.STATUS = 'ACTIVE'
+		ORDER BY MD.SEQ
 	</select>
 	
 	<!-- 저장된 M-BOM 트리 조회 (MBOM_DETAIL 테이블) -->