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Request test data from suppliers instead of judging handbag metal hardware quality by samples alone; Salt Spray Test (ASTM B117) is for corrosion resistance—budget bags ≥24h, mid-range ≥48h, luxury ≥72h (for humid areas); Tensile Strength Test: D-ring/dog clip pull force 30-50kg for regular bags, ≥80kg for travel bags; Friction/Cycle Test: Moving locks should withstand 5,000-10,000 openings/closing without failure.

Handbag hardware plating has three methods: barrel plating (cost-effective but with micro-scratches), rack plating (flawless, thick, standard for mid-to-high-end luxury), and PVD (vacuum-coated, ultra-durable but expensive).