Classification, structure and development of flotation machines
Classification, structure and development of flotation machines At present, there are dozens of flotation devices at home and abroad, and the classification methods are also inconsistent. However, the flotation machines used in actual production are classified into four basic types according to different methods of inflation and agitation: Scratch Off Security Label Sticker
Scratch off hologram labels are applied over pre-printed information. To reveal the underlying information, use the edge of a coin to scratch off the holographic image. After scratch off the label, it will show the information, such as series number, website or some secret number to enter a website to check the authentic.
Scratch off hologram stickers carring Pin code, password or other information under the scratch coat are good secure and fool proof tools widely applied in the card industry. They are suitable for promotion, mobile fee charging, lottery,etc
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