diff --git a/src/main/java/com/xujie/sys/modules/sampletracking/data/ProofTrackingData.java b/src/main/java/com/xujie/sys/modules/sampletracking/data/ProofTrackingData.java
index 20a9b46f..22cdce90 100644
--- a/src/main/java/com/xujie/sys/modules/sampletracking/data/ProofTrackingData.java
+++ b/src/main/java/com/xujie/sys/modules/sampletracking/data/ProofTrackingData.java
@@ -44,6 +44,12 @@ public class ProofTrackingData extends QueryPage {
     private String partDesc;
     @TableField(exist = false)
     private String customerNo;
+    /**
+     * 修改专用物料客户：null 兼容旧接口的共用客户逻辑，空字符串表示清空物料客户。
+     * 项目客户仍使用 customerNo；一键创建不使用此字段。
+     */
+    @TableField(exist = false)
+    private String partCustomerNo;
     @TableField(exist = false)
     private String customerDesc;
     @TableField(exist = false)
diff --git a/src/main/java/com/xujie/sys/modules/sampletracking/service/impl/SampleProofTrackingServiceImpl.java b/src/main/java/com/xujie/sys/modules/sampletracking/service/impl/SampleProofTrackingServiceImpl.java
index b31cee8b..44e7baff 100644
--- a/src/main/java/com/xujie/sys/modules/sampletracking/service/impl/SampleProofTrackingServiceImpl.java
+++ b/src/main/java/com/xujie/sys/modules/sampletracking/service/impl/SampleProofTrackingServiceImpl.java
@@ -455,6 +455,8 @@ public class SampleProofTrackingServiceImpl implements SampleProofTrackingServic
                     return ExportCellAppearance.TRACKING_ON_SCHEDULE;
                 }
                 return ExportCellAppearance.TRACKING_UNKNOWN;
+            case "importance":
+                return isImportanceChecked(row.getImportance()) ? ExportCellAppearance.DELIVERY_ALERT : null;
             case "deliveryVariance":
                 return row.getDeliveryVariance() != null && row.getDeliveryVariance() < -7
                         ? ExportCellAppearance.DELIVERY_ALERT : null;
@@ -1207,6 +1209,10 @@ public class SampleProofTrackingServiceImpl implements SampleProofTrackingServic
 
         ProjectPartTrackingData projectPartData = new ProjectPartTrackingData();
         BeanUtils.copyProperties(data, projectPartData);
+        // 修改弹窗允许项目与物料使用不同客户；显式空字符串也必须保存，不能回退项目客户。
+        if (data.getPartCustomerNo() != null) {
+            projectPartData.setCustomerNo(data.getPartCustomerNo().trim());
+        }
         // 与项目信息同理，确保一键修改时 c* 字段不会被拷贝机制吞掉
         projectPartData.setcQualityEngineer1(data.getcQualityEngineer1());
         projectPartData.setcQualityEngineer2(data.getcQualityEngineer2());
diff --git a/src/main/resources/mapper/sampletracking/SampleProofTrackingMapper.xml b/src/main/resources/mapper/sampletracking/SampleProofTrackingMapper.xml
index 1422b69f..54ab7ac5 100644
--- a/src/main/resources/mapper/sampletracking/SampleProofTrackingMapper.xml
+++ b/src/main/resources/mapper/sampletracking/SampleProofTrackingMapper.xml
@@ -50,7 +50,7 @@
             p.project_no,
             p.project_name,
             p.project_desc,
-            p.customer_no,
+            pp.customer_no,
             p.bu_no,
             p.c_project_region,
             pp.project_manager,
@@ -77,7 +77,7 @@
                  ) latest_delivery_package
                  LEFT JOIN plm_project_info_tracking p ON t.project_id = p.id
                  LEFT JOIN plm_project_part_tracking pp ON t.project_part_id = pp.id
-                 LEFT JOIN plm_customer_information c ON p.site = c.site AND p.customer_no = c.customer_no
+                 LEFT JOIN plm_customer_information c ON pp.site = c.site AND pp.customer_no = c.customer_no
         <where>
             <if test="query.userName != null and query.userName != ''">
                 p.site in (select site from eam_access_site where username = #{query.userName})
@@ -111,11 +111,17 @@
             <if test="query.partDesc != null and query.partDesc != ''">
                 and UPPER(pp.part_desc) like '%' + UPPER(#{query.partDesc}) + '%'
             </if>
-            <if test="query.dryWetType != null and query.dryWetType != ''">
-                and pp.dry_wet_type = #{query.dryWetType}
-            </if>
+            <choose>
+                <!-- __EMPTY__ 为分类筛选“空”的查询专用标识。 -->
+                <when test="query.dryWetType == '__EMPTY__'">
+                    and (pp.dry_wet_type IS NULL OR pp.dry_wet_type = '')
+                </when>
+                <when test="query.dryWetType != null and query.dryWetType != ''">
+                    and pp.dry_wet_type = #{query.dryWetType}
+                </when>
+            </choose>
             <if test="query.customerNo != null and query.customerNo != ''">
-                and UPPER(p.customer_no) like '%' + UPPER(#{query.customerNo}) + '%'
+                and UPPER(pp.customer_no) like '%' + UPPER(#{query.customerNo}) + '%'
             </if>
             <if test="query.customerDesc != null and query.customerDesc != ''">
                 and UPPER(c.customer_desc) like '%' + UPPER(#{query.customerDesc}) + '%'
@@ -649,7 +655,7 @@
             p.project_no,
             p.project_name,
             p.project_desc,
-            p.customer_no,
+            pp.customer_no,
             p.bu_no,
             pp.test_part_no,
             pp.part_desc,