1. material: iron plating nickel, stainless steel and so on. 2. surface treatment: electroplating, vibration polishing; 3.weight: 71g; 4. Experience in manufacturing and exporting for many years; 5. All kinds of stamping parts can be manufactured, designed, or processed according to customer requirements. 6.a strong engineering team makes high quality. 7. Comprehensive material testing process and quality control system. 8.performance: the use of international cold rolling plate material, fine workmanship, quality stability, can withstand tens of thousands of open, easy installation, strong pulling force of the lock tongue, in strong vibration can be clenched, not easy to loose and fall off. 9.scope of application: heavy wooden box, assembly box, import and export packaging box, mechanical equipment, aviation equipment, monitoring equipment, all kinds of high-end equipment.