["Feature:\nbrand new and high quality.\nEfficient, Safe, Pure, Convenient,\nThe product is a cleaning product composed of ultra-pure solvents, additives and composite materials with strong adsorption capacity. It uses high-tech production technology for processing.\nIt can quickly and safely remove dust, oil and other dirt on precision electronic equipment, electronic instruments, instruments and parts, and can effectively prevent program confusion, abnormal operation, control failure, performance degradation, circuit board corrosion, etc. caused by dust intrusion. harm.\n\nSpecification:\nProduct Type: Cleaning Card\nPacking size: (app.) 115x80x43mm / 4.53x3.15x1.69inch\nUses: Transportation, Bank, Securities, Industry and commerce,Taxation,Post and telecommunications, Public safety,Insurance, Energy, Electricity, Education, for Health...\nQuantity: 50 Pcs\n\nNotes:\nUsage: tear open the packaging bag and cut open the mouth, take out the cleaning card, insert the card reader into the card slot, you can enter the automatic cleaning state\nUsage guide: 2-3 times a day in a high-density dust environment; 1-2 times a day in a medium-density dust environment; 1 for time a day in a low-density dust environment\nNote: Do not approach fire or heat sources during use\nTransition: 1 for cm = 10 mm = 0.39 inches\nDue to manual measurement, please allow an error of 0-1 for cm. Make sure you don’for t mind bidding.\nDue to the differences between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nThe package includes:\n50 X Cleaning Card"]