package content: original box + dust bag + invoice + card, etc. for bulk purchases, you can contact the shopkeeper to enjoy discounts for major customers, making the purchase more cost-effective; for bulk purchases, you can contact the shopkeeper to enjoy discounts for major customers, making the purchase more cost-effective if the promised delivery time is exceeded, the goods can be returned without reason. if you are not satisfied 7 days after receiving the goods, you can negotiate a return and refund; collect the store, light up the little red heart, you can give a coupon to deduct the price of the product;.syi