diff --git a/bms-back/bms-system/src/main/java/com/bms/price/service/impl/PrcOrderBillServiceImpl.java b/bms-back/bms-system/src/main/java/com/bms/price/service/impl/PrcOrderBillServiceImpl.java
index 86bbc07f..8f4c3238 100644
--- a/bms-back/bms-system/src/main/java/com/bms/price/service/impl/PrcOrderBillServiceImpl.java
+++ b/bms-back/bms-system/src/main/java/com/bms/price/service/impl/PrcOrderBillServiceImpl.java
@@ -207,21 +207,7 @@ public class PrcOrderBillServiceImpl implements IPrcOrderBillService
             assertOrderBillEditable(request.getOrderNo());
             PrcOrderBill existed = orderBillMapper.selectPrcOrderBillByOrderNo(request.getOrderNo());
             BigDecimal systemWeight = request.getWeight();
-            // Upstream Oracle sync: always use TAB_ORDER weight (same overwrite as weight/charge_weight).
-            // Local rebill / manual charge_weight edit: keep resolveCalcWeight preference.
-            BigDecimal calcWeight = isUpstreamSyncRequest(request)
-                ? systemWeight
-                : resolveCalcWeight(existed, systemWeight);
-            // Three-side sum rule disabled: upstream already applies it.
-            // Manual charge_weight wins; otherwise apply active biz rules (e.g. three-side).
-            // if (!isManualChargeWeight(existed))
-            // {
-            //     BigDecimal ruled = bizRuleService.resolveWeightByRule(request, systemWeight);
-            //     if (ruled != null)
-            //     {
-            //         calcWeight = ruled;
-            //     }
-            // }
+            BigDecimal calcWeight = resolveBillCalcWeight(request, existed, systemWeight);
             request.setWeight(calcWeight);
             TmsPriceQuoteResult result = tmsPriceQuoteService.calculate(request);
             persistBill(request, systemWeight, bizDate, result);
@@ -1836,8 +1822,8 @@ public class PrcOrderBillServiceImpl implements IPrcOrderBillService
         {
             bill.setCountryName(result.getCountryName());
         }
-        // weight = system/original; charge_weight follows weight on upstream sync,
-        // otherwise may keep manual override via resolvePersistChargeWeight.
+        // weight = system/original upstream weight; charge_weight may differ when VOL_8000
+        // (or manual override) raised/lowered the billed weight.
         bill.setWeight(weight);
         bill.setBizDate(bizDate);
         bill.setTmsId(request.getTmsId() == null ? null : Long.valueOf(request.getTmsId()));
@@ -1857,7 +1843,9 @@ public class PrcOrderBillServiceImpl implements IPrcOrderBillService
         bill.setEffectiveDate(result.getEffectiveDate());
         if (isUpstreamSyncRequest(request))
         {
-            bill.setChargeWeight(weight);
+            // request.weight already carries ruled/calc weight used for quote
+            BigDecimal cw = request.getWeight() != null ? request.getWeight() : weight;
+            bill.setChargeWeight(cw);
         }
         else
         {
@@ -2883,6 +2871,51 @@ public class PrcOrderBillServiceImpl implements IPrcOrderBillService
         return systemWeight;
     }
 
+    /**
+     * Resolve weight used for quote/persist.
+     * Upstream: TAB_ORDER weight then biz-rule. Local: manual charge_weight wins, else biz-rule.
+     */
+    private BigDecimal resolveBillCalcWeight(TmsPriceBillRequest request, PrcOrderBill existed,
+        BigDecimal systemWeight)
+    {
+        BigDecimal calcWeight = isUpstreamSyncRequest(request)
+            ? systemWeight
+            : resolveCalcWeight(existed, systemWeight);
+        if (isUpstreamSyncRequest(request) || !isManualChargeWeight(existed))
+        {
+            calcWeight = applyBizRuleWeight(request, calcWeight);
+        }
+        return calcWeight;
+    }
+
+    /**
+     * Upstream sync / soft-fail: keep original weight, charge_weight may follow biz-rule.
+     */
+    private void applyUpstreamWeightFields(PrcOrderBill bill, TmsPriceBillRequest request)
+    {
+        if (bill == null || request == null || request.getWeight() == null)
+        {
+            return;
+        }
+        BigDecimal systemWeight = request.getWeight();
+        bill.setWeight(systemWeight);
+        bill.setChargeWeight(applyBizRuleWeight(request, systemWeight));
+    }
+
+    /**
+     * Biz-rule charge weight (VOL_8000 etc).
+     * To disable: comment out the resolveWeightByRule call and always return baseWeight.
+     */
+    private BigDecimal applyBizRuleWeight(TmsPriceBillRequest request, BigDecimal baseWeight)
+    {
+        if (request == null || baseWeight == null)
+        {
+            return baseWeight;
+        }
+        BigDecimal ruled = bizRuleService.resolveWeightByRule(request, baseWeight);
+        return ruled != null ? ruled : baseWeight;
+    }
+
     /**
      * Persist charge_weight: keep manual override when calc weight != system weight,
      * or when existing bill already had a manual override.
@@ -3077,12 +3110,7 @@ public class PrcOrderBillServiceImpl implements IPrcOrderBillService
         applyProductCodeMapping(bill, request);
         Long customerId = resolveCustomerIdByCode(request.getCustomerCode(), bill.getCustomerId());
         bill.setCustomerId(customerId == null ? Long.valueOf(0L) : customerId);
-        // Order-source sync: overwrite weight and charge_weight the same way from upstream.
-        if (request.getWeight() != null)
-        {
-            bill.setWeight(request.getWeight());
-            bill.setChargeWeight(request.getWeight());
-        }
+        applyUpstreamWeightFields(bill, request);
         if (creating)
         {
             Date bizDate = request.getPickupDate() != null ? request.getPickupDate() : new Date();
@@ -3194,12 +3222,7 @@ public class PrcOrderBillServiceImpl implements IPrcOrderBillService
         {
             bill.setCustomerActiveStatus(BillCustomerActiveStatus.ACTIVE.getCode());
         }
-        // Soft-fail snapshot: overwrite weight and charge_weight the same way from upstream.
-        bill.setWeight(request.getWeight());
-        if (request.getWeight() != null)
-        {
-            bill.setChargeWeight(request.getWeight());
-        }
+        applyUpstreamWeightFields(bill, request);
         Date bizDate = StringUtils.isEmpty(request.getBizDate()) ? new Date() : resolveBizDate(request.getBizDate());
         bill.setBizDate(bizDate);
         if (StringUtils.isEmpty(bill.getCurrency()))
@@ -3267,11 +3290,7 @@ public class PrcOrderBillServiceImpl implements IPrcOrderBillService
         {
             applyUpstreamBillHeaderFields(bill, request);
             applyProductCodeMapping(bill, request);
-            if (request.getWeight() != null)
-            {
-                bill.setWeight(request.getWeight());
-                bill.setChargeWeight(request.getWeight());
-            }
+            applyUpstreamWeightFields(bill, request);
         }
         applyBillingFailText(bill, billingFailStatus, errorMessage);
         orderBillMapper.updatePrcOrderBill(bill);
diff --git a/bms-back/bms-system/src/main/java/com/bms/system/service/IBmsBizRuleService.java b/bms-back/bms-system/src/main/java/com/bms/system/service/IBmsBizRuleService.java
index f844905c..06daa38d 100644
--- a/bms-back/bms-system/src/main/java/com/bms/system/service/IBmsBizRuleService.java
+++ b/bms-back/bms-system/src/main/java/com/bms/system/service/IBmsBizRuleService.java
@@ -21,8 +21,8 @@ public interface IBmsBizRuleService
     int deleteByIds(Long[] ruleIds);
 
     /**
-     * Apply active weight rules to bill request.
-     * @return overridden weight when a rule matches; null when no rule applies
+     * Apply active weight rules (currently VOL_8000) to bill request.
+     * @return overridden charge weight when a rule matches; null when no rule applies
      */
     BigDecimal resolveWeightByRule(TmsPriceBillRequest request, BigDecimal systemWeight);
 }
diff --git a/bms-back/bms-system/src/main/java/com/bms/system/service/impl/BmsBizRuleServiceImpl.java b/bms-back/bms-system/src/main/java/com/bms/system/service/impl/BmsBizRuleServiceImpl.java
index 95e77f08..f7fe7b47 100644
--- a/bms-back/bms-system/src/main/java/com/bms/system/service/impl/BmsBizRuleServiceImpl.java
+++ b/bms-back/bms-system/src/main/java/com/bms/system/service/impl/BmsBizRuleServiceImpl.java
@@ -1,6 +1,7 @@
 package com.bms.system.service.impl;
 
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.LinkedHashSet;
@@ -12,6 +13,8 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import com.bms.common.exception.ServiceException;
 import com.bms.common.utils.StringUtils;
+import com.bms.customer.customerinfo.domain.BmsCustomer;
+import com.bms.customer.customerinfo.mapper.BmsCustomerMapper;
 import com.bms.price.domain.vo.TmsPriceBillRequest;
 import com.bms.system.domain.BmsBizRule;
 import com.bms.system.mapper.BmsBizRuleMapper;
@@ -22,8 +25,12 @@ import com.bms.system.service.IBmsProductCodeMappingService;
 public class BmsBizRuleServiceImpl implements IBmsBizRuleService
 {
     public static final String RULE_TYPE_THREE_SIDE = "THREE_SIDE";
+    /** Charge weight = max(L*W*H/8000, weightSource). */
+    public static final String RULE_TYPE_VOL_8000 = "VOL_8000";
     public static final String WEIGHT_SOURCE_RECEIVE = "RECEIVE_WEIGHT";
     public static final String WEIGHT_SOURCE_CHARGE = "CHARGE_WEIGHT";
+    public static final String WEIGHT_SOURCE_VOLUME = "VOLUME_WEIGHT";
+    private static final BigDecimal VOL_DIVISOR_8000 = new BigDecimal("8000");
 
     @Autowired
     private BmsBizRuleMapper bizRuleMapper;
@@ -31,6 +38,9 @@ public class BmsBizRuleServiceImpl implements IBmsBizRuleService
     @Autowired
     private IBmsProductCodeMappingService productCodeMappingService;
 
+    @Autowired
+    private BmsCustomerMapper bmsCustomerMapper;
+
     @Override
     public List<BmsBizRule> selectList(BmsBizRule query)
     {
@@ -126,21 +136,88 @@ public class BmsBizRuleServiceImpl implements IBmsBizRuleService
         {
             return null;
         }
-        List<BmsBizRule> rules = bizRuleMapper.selectActiveByType(RULE_TYPE_THREE_SIDE);
+        // VOL_8000 is applied on local ingest / bill. THREE_SIDE stays config-only
+        // (upstream already applies that product rule).
+        BigDecimal vol8000 = resolveVol8000(request, systemWeight);
+        if (vol8000 != null)
+        {
+            return vol8000;
+        }
+        return null;
+    }
+
+    /**
+     * VOL_8000: chargeWeight = max(L*W*H/8000, weightSource).
+     * weightSource RECEIVE_WEIGHT / CHARGE_WEIGHT / VOLUME_WEIGHT.
+     */
+    private BigDecimal resolveVol8000(TmsPriceBillRequest request, BigDecimal systemWeight)
+    {
+        List<BmsBizRule> rules = bizRuleMapper.selectActiveByType(RULE_TYPE_VOL_8000);
         if (rules == null || rules.isEmpty())
         {
             return null;
         }
+        BigDecimal dimVol = calcVolumeWeight8000(request);
+        if (dimVol == null)
+        {
+            return null;
+        }
         for (BmsBizRule rule : rules)
         {
-            if (matchThreeSide(rule, request, systemWeight))
+            if (!matchVol8000(rule, request, systemWeight))
             {
-                return pickWeight(rule.getWeightSource(), request, systemWeight);
+                continue;
             }
+            BigDecimal other = pickWeight(rule.getWeightSource(), request, systemWeight);
+            if (other == null)
+            {
+                return dimVol;
+            }
+            return other.max(dimVol).setScale(3, RoundingMode.HALF_UP);
         }
         return null;
     }
 
+    private boolean matchVol8000(BmsBizRule rule, TmsPriceBillRequest request, BigDecimal systemWeight)
+    {
+        if (rule == null)
+        {
+            return false;
+        }
+        if (!dimMatch(request.getProductCode(), rule.getProductCode(), true))
+        {
+            return false;
+        }
+        if (!dimMatch(request.getCountryCode(), rule.getCountryCode(), false))
+        {
+            return false;
+        }
+        if (!matchCustomerDim(request.getCustomerCode(), rule.getCustomerCode()))
+        {
+            return false;
+        }
+        BigDecimal checkWeight = firstPositive(request.getReceiveWeight(), request.getActualWeight(),
+            systemWeight, request.getWeight(), request.getVolumeWeight());
+        return inWeightRange(checkWeight, rule.getWeightMin(), rule.getWeightMax());
+    }
+
+    private static BigDecimal calcVolumeWeight8000(TmsPriceBillRequest request)
+    {
+        if (request == null)
+        {
+            return null;
+        }
+        BigDecimal l = nzDim(request.getPkgLength());
+        BigDecimal w = nzDim(request.getPkgWidth());
+        BigDecimal h = nzDim(request.getPkgHeight());
+        if (l == null || w == null || h == null)
+        {
+            return null;
+        }
+        return l.multiply(w).multiply(h)
+            .divide(VOL_DIVISOR_8000, 3, RoundingMode.HALF_UP);
+    }
+
     private void assertUnique(BmsBizRule row, Long excludeId)
     {
         int cnt = bizRuleMapper.countByDim(row.getRuleType(), row.getProductCode(), row.getCountryCode(),
@@ -210,7 +287,7 @@ public class BmsBizRuleServiceImpl implements IBmsBizRuleService
         {
             return false;
         }
-        if (!dimMatch(request.getCustomerCode(), rule.getCustomerCode(), false))
+        if (!matchCustomerDim(request.getCustomerCode(), rule.getCustomerCode()))
         {
             return false;
         }
@@ -254,17 +331,109 @@ public class BmsBizRuleServiceImpl implements IBmsBizRuleService
         return false;
     }
 
+    /**
+     * Customer dim: rule may store customer_code or customer_code_dw (对外代码).
+     * Request may carry either form from upstream / local bill.
+     */
+    private boolean matchCustomerDim(String requestCode, String ruleCode)
+    {
+        if (StringUtils.isEmpty(ruleCode))
+        {
+            return true;
+        }
+        if (StringUtils.isEmpty(requestCode))
+        {
+            return false;
+        }
+        String req = normalizeCode(requestCode);
+        String rule = normalizeCode(ruleCode);
+        if (req == null || rule == null)
+        {
+            return false;
+        }
+        if (req.equals(rule))
+        {
+            return true;
+        }
+        BmsCustomer byReq = findCustomerByCodeOrDw(req);
+        if (byReq != null && customerHasCode(byReq, rule))
+        {
+            return true;
+        }
+        BmsCustomer byRule = findCustomerByCodeOrDw(rule);
+        return byRule != null && customerHasCode(byRule, req);
+    }
+
+    private static boolean customerHasCode(BmsCustomer customer, String code)
+    {
+        if (customer == null || code == null)
+        {
+            return false;
+        }
+        String c = normalizeCode(customer.getCustomerCode());
+        String dw = normalizeCode(customer.getCustomerCodeDw());
+        return code.equals(c) || code.equals(dw);
+    }
+
+    private BmsCustomer findCustomerByCodeOrDw(String code)
+    {
+        if (code == null || bmsCustomerMapper == null)
+        {
+            return null;
+        }
+        try
+        {
+            BmsCustomer q = new BmsCustomer();
+            q.setCustomerCode(code);
+            List<BmsCustomer> list = bmsCustomerMapper.selectBmsCustomerList(q);
+            BmsCustomer hit = firstCustomerWithCode(list, code);
+            if (hit != null)
+            {
+                return hit;
+            }
+            q = new BmsCustomer();
+            q.setCustomerCodeDw(code);
+            list = bmsCustomerMapper.selectBmsCustomerList(q);
+            return firstCustomerWithCode(list, code);
+        }
+        catch (RuntimeException e)
+        {
+            return null;
+        }
+    }
+
+    private static BmsCustomer firstCustomerWithCode(List<BmsCustomer> list, String code)
+    {
+        if (list == null || list.isEmpty() || code == null)
+        {
+            return null;
+        }
+        for (BmsCustomer row : list)
+        {
+            if (customerHasCode(row, code))
+            {
+                return row;
+            }
+        }
+        return null;
+    }
+
     private static BigDecimal pickWeight(String weightSource, TmsPriceBillRequest request, BigDecimal systemWeight)
     {
         if (WEIGHT_SOURCE_RECEIVE.equalsIgnoreCase(weightSource))
         {
-            BigDecimal rw = firstPositive(request.getReceiveWeight(), request.getActualWeight());
+            // Prefer actual (实重), then receive weight.
+            BigDecimal rw = firstPositive(request.getActualWeight(), request.getReceiveWeight());
             return rw != null ? rw : systemWeight;
         }
         if (WEIGHT_SOURCE_CHARGE.equalsIgnoreCase(weightSource))
         {
             return systemWeight != null ? systemWeight : request.getWeight();
         }
+        if (WEIGHT_SOURCE_VOLUME.equalsIgnoreCase(weightSource))
+        {
+            return firstPositive(request.getVolumeWeight());
+        }
         return null;
     }
 
@@ -372,12 +541,12 @@ public class BmsBizRuleServiceImpl implements IBmsBizRuleService
         }
         if (RULE_TYPE_THREE_SIDE.equalsIgnoreCase(row.getRuleType()) && row.getSideSumMax() == null)
         {
-            throw new ServiceException("三边规则必须填写三边和上限");
+            throw new ServiceException("\u4e09\u8fb9\u89c4\u5219\u5fc5\u987b\u586b\u5199\u4e09\u8fb9\u548c\u4e0a\u9650");
         }
         if (row.getWeightMin() != null && row.getWeightMax() != null
             && row.getWeightMin().compareTo(row.getWeightMax()) > 0)
         {
-            throw new ServiceException("重量段最小值不能大于最大值");
+            throw new ServiceException("\u91cd\u91cf\u6bb5\u6700\u5c0f\u503c\u4e0d\u80fd\u5927\u4e8e\u6700\u5927\u503c");
         }
     }
 }
diff --git a/bms-back/sql/data/biz_rule_vol_8000.sql b/bms-back/sql/data/biz_rule_vol_8000.sql
new file mode 100644
index 00000000..6ce35bb0
--- /dev/null
+++ b/bms-back/sql/data/biz_rule_vol_8000.sql
@@ -0,0 +1,26 @@
+-- VOL_8000: charge_weight = max(L*W*H/8000, weight_source)
+-- customer_code column stores 对外代码 customer_code_dw (C00222/C00562/C00521/C00805)
+SET NAMES utf8mb4;
+
+INSERT INTO sys_dict_data (dict_sort, dict_label, dict_value, dict_type, css_class, list_class, is_default, status, create_by, create_time, remark)
+SELECT 2, N'材积重8000取大', 'VOL_8000', 'bms_biz_rule_type', '', 'success', 'N', '0', 'admin', sysdate(),
+       N'计费重=max(长×宽×高/8000, 取值字段)'
+FROM DUAL WHERE NOT EXISTS (SELECT 1 FROM sys_dict_data WHERE dict_type = 'bms_biz_rule_type' AND dict_value = 'VOL_8000');
+
+INSERT INTO sys_dict_data (dict_sort, dict_label, dict_value, dict_type, css_class, list_class, is_default, status, create_by, create_time, remark)
+SELECT 3, N'材积重', 'VOLUME_WEIGHT', 'bms_biz_weight_source', '', 'info', 'N', '0', 'admin', sysdate(),
+       N'订单材积重 volume_weight'
+FROM DUAL WHERE NOT EXISTS (SELECT 1 FROM sys_dict_data WHERE dict_type = 'bms_biz_weight_source' AND dict_value = 'VOLUME_WEIGHT');
+
+-- Seed by 对外代码 (customer_code_dw). Matcher also accepts customer_code.
+INSERT INTO biz_rule (rule_name, rule_type, product_code, country_code, customer_code, weight_min, weight_max, weight_source, side_sum_max, status, remark, create_by, create_time, del_flag)
+SELECT CONCAT(N'对外代码', v.customer_code, N' 材积重8000取大'), 'VOL_8000', NULL, NULL, v.customer_code, NULL, NULL, 'RECEIVE_WEIGHT', NULL, '0',
+       N'客户维度为对外代码customer_code_dw；计费重=max(长×宽×高/8000, 实重)', 'admin', sysdate(), '0'
+FROM (
+  SELECT 'C00222' AS customer_code UNION ALL SELECT 'C00562' UNION ALL SELECT 'C00521' UNION ALL SELECT 'C00805'
+) v
+WHERE NOT EXISTS (
+  SELECT 1 FROM biz_rule r
+  WHERE r.del_flag = '0' AND r.rule_type = 'VOL_8000' AND r.customer_code = v.customer_code
+    AND r.product_code IS NULL AND r.country_code IS NULL
+);
diff --git a/bms-front/src/views/data/rule/config/index.vue b/bms-front/src/views/data/rule/config/index.vue
index 50a87e4f..49f19f92 100644
--- a/bms-front/src/views/data/rule/config/index.vue
+++ b/bms-front/src/views/data/rule/config/index.vue
@@ -73,14 +73,14 @@
             />
           </el-select>
         </el-form-item>
-        <el-form-item label="客户" prop="customerCodeList">
+        <el-form-item label="客户(对外代码)" prop="customerCodeList">
           <customer-select
             v-model="form.customerCodeList"
             type="customer"
             value-key="customerCode"
             label-key="customerName"
-            code-key="customerCode"
-            :placeholder="isEdit ? '空=全部客户' : '多选将按客户展开为多行，空=全部'"
+            code-key="customerCodeDw"
+            :placeholder="isEdit ? '可填对外代码，空=全部' : '可选/填对外代码，多选展开为多行，空=全部'"
             :multiple="!isEdit"
           />
         </el-form-item>
@@ -104,6 +104,14 @@
         <el-form-item v-if="form.ruleType === 'THREE_SIDE'" label="三边和上限" prop="sideSumMax">
           <el-input-number v-model="form.sideSumMax" :min="0" :precision="2" :controls="false" placeholder="L+W+H < 该值" style="width: 100%" />
         </el-form-item>
+        <el-alert
+          v-if="form.ruleType === 'VOL_8000'"
+          type="info"
+          :closable="false"
+          show-icon
+          style="margin-bottom: 12px"
+          title="计费重 = max(长×宽×高(cm)/8000, 取值字段)；无尺寸时不覆盖"
+        />
         <el-form-item label="状态" prop="status">
           <el-radio-group v-model="form.status">
             <el-radio value="0">正常</el-radio>