diff --git a/src/modules/first-leg/utils/customsDocumentsReader.ts b/src/modules/first-leg/utils/customsDocumentsReader.ts
new file mode 100644
index 0000000..8e77b83
--- /dev/null
+++ b/src/modules/first-leg/utils/customsDocumentsReader.ts
@@ -0,0 +1,52 @@
+import { getMerchantUnifiedOrders } from '../api/unifiedOrders'
+import { getMerchantCustomsForOrder, isMerchantCustomsUnavailable, type MerchantCustomsContainer } from '../api/customs'
+import { isCustomsOrderCandidate } from './customsEligibility'
+
+export interface CustomsDocumentRow {
+  order: { id: string; orderNo: string | null; businessSummary: { inboundCode: string } }
+  detail: MerchantCustomsContainer
+}
+
+// Isolated from the shared order store: scan sequential pages, with at most
+// four document requests in flight. Inconsistent pagination must be visible.
+export async function readCustomsDocuments() {
+  const records: CustomsDocumentRow[] = []
+  const seen = new Set<string>()
+  let expectedTotal: number | undefined
+  let failedCount = 0
+  const size = 200
+  for (let page = 1; ; page += 1) {
+    const response = await getMerchantUnifiedOrders({ page, size })
+    const total = Number(response.total)
+    const pages = Number(response.pages)
+    if (!Number.isSafeInteger(total) || total < 0 || Number(response.page) !== page
+      || Number(response.size) !== size || pages !== Math.ceil(total / size)
+      || (expectedTotal !== undefined && total !== expectedTotal)
+      || response.records.length !== Math.min(size, Math.max(0, total - (page - 1) * size))) {
+      throw new Error('订单分页数据不完整或已变化，请重新加载报关资料')
+    }
+    expectedTotal = total
+    for (const row of response.records) {
+      const id = String(row.orderId)
+      if (seen.has(id)) throw new Error('订单分页存在重复记录，请重新加载报关资料')
+      seen.add(id)
+    }
+    const candidates = response.records.filter(row => isCustomsOrderCandidate({ status: row.mainStatus, taxMode: row.taxMode ?? 'BUY_DECLARATION' }))
+    for (let offset = 0; offset < candidates.length; offset += 4) {
+      const results = await Promise.all(candidates.slice(offset, offset + 4).map(async row => {
+        const id = String(row.orderId)
+        try {
+          const detail = await getMerchantCustomsForOrder(id)
+          if (!detail.inbounds.some(item => item.orderId === id && item.taxMode === 'TAX_REFUND')) return null
+          return { order: { id, orderNo: row.orderNo, businessSummary: { inboundCode: row.inboundCode ?? '' } }, detail }
+        } catch (error) {
+          if (!isMerchantCustomsUnavailable(error)) failedCount += 1
+          return null
+        }
+      }))
+      for (const result of results) if (result) records.push(result)
+    }
+    if (page >= pages) break
+  }
+  return { records, failedCount }
+}
diff --git a/src/modules/first-leg/views/CustomsDocumentsView.test.mjs b/src/modules/first-leg/views/CustomsDocumentsView.test.mjs
index 269b13f..4f62422 100644
--- a/src/modules/first-leg/views/CustomsDocumentsView.test.mjs
+++ b/src/modules/first-leg/views/CustomsDocumentsView.test.mjs
@@ -17,19 +17,90 @@ const eligibility = evaluate(readFileSync(new URL('../utils/customsEligibility.t
 const order = (id, status = 'LOADED', taxMode = 'TAX_REFUND') => ({ id, status, taxMode, orderNo: `ORDER-${id}`, businessSummary: { inboundCode: `IN-${id}` } })
 const detail = id => ({ status: 'COMPLETED', merchantStatus: 'CUSTOMS_COMPLETED', inbounds: [{ orderId: id, taxMode: 'TAX_REFUND' }] })
 function harness(t, orders, getDetail = async id => detail(id)) {
-  const store = { orders, loadError: '', load: async () => {} }, calls = []
+  const store = { loadError: '', failPage: 0, transformPage: value => value }, calls = [], pageCalls = []
+  const reader = evaluate(readFileSync(new URL('../utils/customsDocumentsReader.ts', import.meta.url), 'utf8'), {
+    './customsEligibility': eligibility,
+    '../api/unifiedOrders': { getMerchantUnifiedOrders: async ({ page, size }) => {
+      pageCalls.push({ page, size })
+      if (store.loadError || store.failPage === page) throw new Error(store.loadError || '第二页订单查询失败')
+      return store.transformPage({ page, size, total: orders.length, pages: Math.ceil(orders.length / size),
+        records: orders.slice((page - 1) * size, page * size).map(row => ({ orderId: row.id, orderNo: row.orderNo, mainStatus: row.status, taxMode: row.taxMode, inboundCode: row.businessSummary.inboundCode })) })
+    } },
+    '../api/customs': { getMerchantCustomsForOrder: id => { calls.push(id); return getDetail(id) }, isMerchantCustomsUnavailable: error => error?.code === 'A0404' },
+  })
   const source = readFileSync(new URL('./CustomsDocumentsView.vue', import.meta.url), 'utf8').match(/<script setup lang="ts">([\s\S]*?)<\/script>/)[1]
   const scope = vue.effectScope()
   const view = scope.run(() => evaluate(source + '\nexport { load, records, loading, errorMessage, openDetail, selectedOrderId, selectedDetail, dialogOpen, search, queryModel, filteredRecords }', {
     vue: { ...vue, onMounted() {} },
-    '../public': { useFirstLegOrdersStore: () => store },
-    '../utils/customsEligibility': eligibility,
-    '../api/customs': { getMerchantCustomsForOrder: id => { calls.push(id); return getDetail(id) }, isMerchantCustomsUnavailable: error => error?.code === 'A0404' },
+    '../utils/customsDocumentsReader': reader,
   }))
   t.after(() => scope.stop())
-  return { view, store, calls }
+  return { view, store, calls, pageCalls }
 }
 
+test('finds historical refund documents beyond the first 200 unified orders', async t => {
+  const orders = Array.from({ length: 200 }, (_, i) => order(`buy-${i}`, 'COMPLETED', 'BUY_DECLARATION'))
+  orders.push(order('historical', 'COMPLETED'))
+  const { view, calls, pageCalls } = harness(t, orders)
+  await view.load()
+  assert.deepEqual(calls, ['historical'])
+  assert.equal(view.records.value[0].order.id, 'historical')
+  assert.deepEqual(pageCalls, [{ page: 1, size: 200 }, { page: 2, size: 200 }])
+})
+
+test('second page failure is explicit and retry does not retain an incomplete result', async t => {
+  const orders = Array.from({ length: 201 }, (_, i) => order(String(i)))
+  const { view, store, pageCalls } = harness(t, orders)
+  store.failPage = 2
+  await view.load()
+  assert.equal(view.records.value.length, 0)
+  assert.equal(view.errorMessage.value, '第二页订单查询失败')
+  store.failPage = 0
+  await view.load()
+  assert.equal(view.records.value.length, 201)
+  assert.equal(view.errorMessage.value, '')
+  assert.equal(pageCalls.length, 4)
+})
+
+test('empty pages, duplicate records and changing totals cannot silently truncate history', async t => {
+  for (const change of [
+    response => response.page === 2 ? { ...response, records: [] } : response,
+    response => response.page === 2 ? { ...response, records: [{ ...response.records[0], orderId: '0' }] } : response,
+    response => response.page === 2 ? { ...response, total: 202 } : response,
+  ]) {
+    const { view, store, pageCalls } = harness(t, Array.from({ length: 201 }, (_, i) => order(String(i), 'COMPLETED', 'BUY_DECLARATION')))
+    store.transformPage = change
+    await view.load()
+    assert.ok(view.errorMessage.value)
+    assert.equal(view.records.value.length, 0)
+    assert.equal(pageCalls.length, 2)
+  }
+})
+
+test('document fetch concurrency never exceeds four and each candidate is requested once', async t => {
+  let active = 0, peak = 0
+  const { view, calls, pageCalls } = harness(t, Array.from({ length: 205 }, (_, i) => order(String(i))), async id => {
+    active += 1; peak = Math.max(peak, active)
+    await new Promise(resolve => setImmediate(resolve))
+    active -= 1
+    return detail(id)
+  })
+  await view.load()
+  assert.equal(peak, 4)
+  assert.equal(new Set(calls).size, 205)
+  assert.equal(calls.length, 205)
+  assert.equal(pageCalls.length, 2)
+  assert.equal(view.records.value.length, 205)
+})
+
+test('empty result uses one page request and no document requests', async t => {
+  const { view, calls, pageCalls } = harness(t, [])
+  await view.load()
+  assert.equal(pageCalls.length, 1)
+  assert.equal(calls.length, 0)
+  assert.equal(view.errorMessage.value, '')
+})
+
 test('tax-refund documents remain accessible through delivered and completed orders; buy orders and preloading are excluded', async t => {
   const stages = ['DRAFT', 'PENDING_REVIEW', 'WAIT_MEASURE', 'WAIT_PALLETIZE', 'WAIT_SPLIT', 'LOADING', 'LOADED', 'DELIVERED', 'COMPLETED']
   const orders = stages.flatMap(status => [order(status, status), order(`BUY-${status}`, status, 'BUY_DECLARATION')])
diff --git a/src/modules/first-leg/views/CustomsDocumentsView.vue b/src/modules/first-leg/views/CustomsDocumentsView.vue
index e1ef1c1..70d7ab4 100644
--- a/src/modules/first-leg/views/CustomsDocumentsView.vue
+++ b/src/modules/first-leg/views/CustomsDocumentsView.vue
@@ -4,13 +4,10 @@ import { RefreshCcw } from '@lucide/vue'
 import DataTable, { type DataTableColumn } from '@/components/common/DataTable.vue'
 import QueryToolbar, { type QueryField, type QueryModel } from '@/components/common/QueryToolbar.vue'
 import type { TableAction } from '@/components/common/tableActions'
-import { useFirstLegOrdersStore } from '../public'
-import { getMerchantCustomsForOrder, isMerchantCustomsUnavailable, type MerchantCustomsContainer } from '../api/customs'
-import { isCustomsOrderCandidate } from '../utils/customsEligibility'
+import type { MerchantCustomsContainer } from '../api/customs'
+import { readCustomsDocuments, type CustomsDocumentRow } from '../utils/customsDocumentsReader'
 import CustomsDocumentsDialog from '../components/CustomsDocumentsDialog.vue'
-import type { FirstLegOrder } from '../types/firstLegOrder'
 
-const store = useFirstLegOrdersStore()
 const loading = ref(false)
 const errorMessage = ref('')
 const queryModel = ref<QueryModel>({ orderNo: '', inboundCode: '', containerNo: '', status: '' })
@@ -37,7 +34,7 @@ const columns: DataTableColumn[] = [
   { label: '资料覆盖', slotName: 'coverage', width: 110, align: 'center' },
   { label: '状态', slotName: 'status', width: 130 },
 ]
-const records = ref<Array<{ order: FirstLegOrder; detail: MerchantCustomsContainer }>>([])
+const records = ref<CustomsDocumentRow[]>([])
 const dialogOpen = ref(false)
 const selectedOrderId = ref('')
 const selectedDetail = ref<MerchantCustomsContainer | null>(null)
@@ -77,12 +74,8 @@ async function load() {
   if (loading.value) return
   loading.value = true; errorMessage.value = ''
   try {
-    await store.load()
-    if (store.loadError) throw new Error(store.loadError)
-    const candidates = store.orders.filter(isCustomsOrderCandidate)
-    const results = await Promise.allSettled(candidates.map(async (order) => ({ order, detail: await getMerchantCustomsForOrder(order.id) })))
-    records.value = results.flatMap((result) => result.status === 'fulfilled' && result.value.detail.inbounds.some((item) => item.orderId === result.value.order.id && item.taxMode === 'TAX_REFUND') ? [result.value] : [])
-    const failedCount = results.filter((result) => result.status === 'rejected' && !isMerchantCustomsUnavailable(result.reason)).length
+    const { records: loadedRecords, failedCount } = await readCustomsDocuments()
+    records.value = loadedRecords
     if (failedCount) errorMessage.value = `${failedCount} 票订单的报关资料加载失败，请重新加载`
   } catch (error) {
     records.value = []
@@ -90,7 +83,7 @@ async function load() {
   } finally { loading.value = false }
 }
 function openDetail(item: unknown) {
-  const value = item as { order: FirstLegOrder; detail: MerchantCustomsContainer }
+  const value = item as CustomsDocumentRow
   selectedOrderId.value = value.order.id; selectedDetail.value = value.detail; dialogOpen.value = true
 }
 function updateDetail(value: MerchantCustomsContainer) {