Crystal labels, also known as UV transfer stickers, cultural stickers, or UV cold transfer stickers, are a type of decorative graphic transfer process. Originating from the pressure-sensitive sticker concept, these labels are printed on a special release material. The process involves printing graphics onto a film (A-film) with adhesive through a UV printer, then covering it with a transfer film (B-film). Afterward, the transfer film is used to lift the printed design and adhere it to the surface of a product, creating a high-quality, durable graphic.