Watsons generally use specifications below 8CM. This kind of magnetic stripe, also called EM anti-theft magnetic stripe, is made of metal materials such as cobalt, nickel, iron, silicon and boron. Under the action of high temperature, these metals form molten liquid, and then they are ejected from the timely nozzle at high speed to form solid strips. Because the time from liquid to solid is controlled in a very short time, an amorphous state is formed. When the distribution system is reasonable and the manufacturing process is scientific, the obtained amorphous materials have high magnetic permeability. The anti-theft device uses its high permeability to detect and alarm. At present, both cobalt-based magnetic strips and iron-based magnetic strips are amorphous materials.

1. According to different materials, it can be divided into iron-based and cobalt-based materials;

1, iron-based magnetic stripe; Low cost, poor toughness, easy to rust when it meets water.

2. Cobalt-based magnetic strips do not have the disadvantages of iron-based magnetic strips, but the cost is relatively high.

Second, according to different functions, it can be divided into permanent magnetic stripe and composite magnetic stripe;

1, permanent magnetic stripe; Cannot be magnetized or demagnetized.

2. Composite magnetic stripe; A degaussing sheet is added to the permanent magnet strip, so that the composite magnetic strip can be magnetized and degaussed.

Three, according to the different appearance, it is divided into naked magnetic stripe, double-sided magnetic stripe, single-sided bar code magnetic stripe and single-sided transparent magnetic stripe.

1, naked magnetic stripe; It is a naked strip of amorphous metal, which can be directly stuffed into the packaging box of goods. It is widely used in department stores and pharmacies.

2, double-sided magnetic stripe; Mainly used for book anti-theft, libraries, bookstores use more.

3. Single-sided bar code magnetic stripe; Barcodes are generally pseudo-codes, and usable barcodes can also be generated as required. One side 4. Bar code magnetic strips are mainly used in office supplies, pharmacies and supermarkets. Single-sided transparent magnetic stripe is generally used for anti-theft of dark goods, because the magnetic stripe and dark goods have the same color and are not easy to be found.

Four, according to the length of the magnetic stripe is divided into; 5cm . 6cm . 8cm . 10cm . 12cm . 16cm。 . Specifications below eight centimeters are generally used in medicines, department stores, cosmetics and office supplies. 10 cm or more is generally used by libraries, bookstores and video stores.