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By certification 
Product model: MX804
Specification: 162*73*65
Material: inkjet leather and iron
This product is made of digital inkjet leather
Color can be customized according to customer choice
Product description:
There are two to five pieces of alloy elastic memory shrapnel on the shaft of the glasses case. After you shape it at a certain angle during production, you pull it open. Under the action of memory, it will automatically change back to the angle when it was formed. The sound is caused by the collision when the glasses case is closed, not by shrapnel. Some glasses cases use springs instead of shrapnel, the principle is the same.
http://www.mxglassescase.com/
