RFID Coin Tag,abs tag,with hole,water and dust-proof, used in Security, Inventory Control, and ... plastic welding or filling epoxy techniquesThe coin tags have a hole in the center. Usually it is fixed by screw, big size coin ... , Unique 125kHz EM4102/4100 Application:Supply chain management, intendance of the patrol guard, property trackingCustomization Supports:Laser logo/inner numberSilk-screen ...