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ring binder 1. surface treatment: nickel electroplating, nickel free (through the 10 mental detection and can provide the sgs reports) 2. base width available: 15mm, 17mm,20mm, 26mm, 36mm, 45mm 3. overall length available: 89mm, 123mm, 133mm, 152mm, 158mm, 171mm, 195mm, 210mm, 241, 264mm, 280mm, ...
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