diff --git a/apps/importer/src/shopee/__tests__/open-core-intelligence.test.ts b/apps/importer/src/shopee/__tests__/open-core-intelligence.test.ts
index b437c999..c97c40a2 100644
--- a/apps/importer/src/shopee/__tests__/open-core-intelligence.test.ts
+++ b/apps/importer/src/shopee/__tests__/open-core-intelligence.test.ts
@@ -714,6 +714,25 @@ async function runSuite() {
     'Dây Apple Watch S/M 42mm',
     'Dây Apple Watch Series 10 46mm tặng ốp',
     '🔥 [Chính hãng] Ốp lưng iPhone 16 Pro Max',
+    // DOS/Rate#1539: a folio case stays a case; only HP's Folio line is a device.
+    'Folio case for iPad Pro 11',
+    'Folio 11 inch cho iPad Pro',
+    'Folio iPad 10',
+    'Folio 13 cho HP Pavilion',
+    'Folio 13 HP sleeve chống sốc',
+    'Folio 13 Samsung Galaxy Tab S9',
+    // Review of #1541: an accessory or fit word right after the brand, and a brand that is
+    // not right after the model.
+    'Folio 13 HP op lung',
+    'Folio 13 HP tui chong soc',
+    'Folio 13 HP cường lực',
+    'Folio 13 HP adapter 65W',
+    'Folio 13 HP tuong thich',
+    'Folio 12 iPad Pro HP',
+    // Codex round 2 on #1541.
+    'Folio 13 HP sac 45W dau kim',
+    'Folio 13 HP ban phim US thay the',
+    'Folio 13 HP - sleeve da màu nâu',
   ];
   for (const title of accessoryTitles1505) {
     const accessory = normalizer.normalize(createDummyShopeeProduct(title));
@@ -734,9 +753,29 @@ async function runSuite() {
     ['Bút cảm ứng cao cấp chính hãng Apple Pencil Pro', 'apple:pencil-pro:unknown'],
     // A gift that opens the title is not what it sells.
     ['Ốp lưng tặng kèm khi mua iPhone 16 Pro Max 256GB', 'apple:iphone-16-pro-max:256gb'],
+    // DOS/Rate#1539: HP's Folio laptops open with the line word and keep a key. The
+    // brand after the model stays in it, as for any laptop line typed that way.
+    ['Folio 13 HP Core i5 8GB 256GB', 'hp:folio-13-hp-core:256gb'],
+    ['[Chính hãng] Folio 13 HP i5 8GB', 'hp:folio-13-hp-i5:8gb'],
+    ['HP EliteBook Folio 1040 G3 i7 16GB', 'hp:elitebook-folio-1040-g3:16gb'],
   ] as const) {
     assert.equal(keyOf(title), expectedKey, title);
   }
+  // Review of #1541: promo words before the line, older "G1" models, and the laptop's own
+  // text later in the title ("bàn phím có đèn", "dùng cho văn phòng") keep the device.
+  for (const title of [
+    '[Hàng chính hãng] Folio 13 HP i5 8GB',
+    'Combo Folio 13 HP i5 8GB',
+    'Folio G1 HP Core m5 8GB',
+    'Folio 1040 G3 HP i5 8GB',
+    'Folio 13 (HP) i5 8GB',
+    'Folio 13 HP Core i5 bàn phím có đèn',
+    'Folio 13 HP i5 dùng cho văn phòng',
+    'Folio 13 HP pin 8 tiếng',
+    'Folio 13 HP cho sinh viên Core i5 4GB RAM SSD 128GB',
+  ]) {
+    assert.equal(normalizer.normalize(createDummyShopeeProduct(title)).keyable, true, title);
+  }
   // DOS/Rate#1124: a size outside a band phrase is the case's; a band's size counts only
   // when the title names no other.
   const watchBandSizeKeys1124: Array<[string, string]> = [
diff --git a/apps/importer/src/shopee/product-normalizer.ts b/apps/importer/src/shopee/product-normalizer.ts
index 713209d4..d5392bda 100644
--- a/apps/importer/src/shopee/product-normalizer.ts
+++ b/apps/importer/src/shopee/product-normalizer.ts
@@ -411,6 +411,38 @@ const ACCESSORY_OPENER =
 const PENCIL_FIT_WORD =
   /(?<![\p{L}\d])(?:cho|for|thay|như|giống|kiểu|dùng|tương\s*thích|compatible|khe|đựng|ngăn)(?![\p{L}\d])/iu;
 
+// Device lines named like an accessory: the line word, its model ("13", "1040 G3", "G1")
+// and the brand that owns the line right after it. HP's Folio laptops ("Folio 13 HP Core
+// i5 8GB", DOS/Rate#1539).
+const DEVICE_LINE_OPENERS: readonly RegExp[] = [
+  /^folio\s+(?:\d{1,4}[a-z]?|g\d)(?:\s+g\d)?\s+[([]?hp[)\]]?(?![\p{L}\d])/iu,
+];
+// The promo words ACCESSORY_OPENER lets come before the accessory.
+const OPENER_PROMO = /^(?:(?:combo|bộ|set|hàng\s*chính\s*hãng)\s+)?/iu;
+// Accessories that ACCESSORY_OPENER does not name, typed with or without diacritics, and
+// fit words, right after a laptop name: "Folio 13 HP sleeve", "Folio 13 HP tui chong soc",
+// "Folio 13 HP sac 45W". "cho" is not one: "Folio 13 HP cho sinh viên" is the laptop.
+const LAPTOP_ACCESSORY_OPENER =
+  /^(?:sleeves?|pouch|bags?|balo|ba\s*lô|túi|tui|bao|adapter|battery|decal|stand|casing|miếng|mieng|kinh|dan|sac|cap|ban\s*phim|tempered|tương\s*thích|tuong\s*thich|compatible|thay)(?![\p{L}\d])/iu;
+
+/**
+ * A device whose line name is also an accessory word: "Folio 13 HP ..." is an HP Folio
+ * laptop, not a folio case (DOS/Rate#1539). The line's own brand must come right after its
+ * model, so "Folio case for iPad", "Folio 13 cho HP" and "Folio 12 iPad Pro HP" stay
+ * accessories, and an accessory right after the brand ("Folio 13 HP op lung") is still one.
+ * What comes later is the laptop's own text ("bàn phím có đèn", "dùng cho văn phòng").
+ */
+function opensWithDeviceLine(opening: string): boolean {
+  const title = opening.replace(OPENER_PROMO, '');
+  return DEVICE_LINE_OPENERS.some(line => {
+    const head = line.exec(title);
+    if (!head) return false;
+    // "Folio 13 HP - sleeve da" and "Folio 13 HP (sleeve)" read the word after the dash.
+    const rest = title.slice(head[0].length).replace(/^[\s\p{P}\p{S}]+/u, '');
+    return !ACCESSORY_OPENER.test(rest) && !LAPTOP_ACCESSORY_OPENER.test(rest);
+  });
+}
+
 /**
  * A pen sold as itself: "Bút cảm ứng (chính hãng) Apple Pencil Pro" is the Apple Pencil,
  * its own product. Only the pen word and promo words may come before "Apple Pencil"; a
@@ -455,7 +487,13 @@ export function isAccessoryTitle(title: string): boolean {
   // What the title sells, not a gift it opens with: "Ốp lưng tặng kèm khi mua iPhone 16 Pro
   // Max" sells the iPhone (DOS/Rate#1407).
   const opening = openingWords(ownProductPart(t));
-  if (!ACCESSORY_OPENER.test(opening) || opensWithApplePencil(opening)) return false;
+  if (
+    !ACCESSORY_OPENER.test(opening) ||
+    opensWithApplePencil(opening) ||
+    opensWithDeviceLine(opening)
+  ) {
+    return false;
+  }
   // The part before a gift stops at the "+", so the bundle is read on the whole title.
   const whole = openingWords(t);
   const plus = whole.indexOf('+');