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Rainbow Hardware Co., Ltd. is world's leading Fasteners Hardware Manufacturer, Exporter and Wholesaler.  Rainbow Hardware Co., Ltd. was established in 1980 in Taiwan, specializing in both customized and standard fasteners and hardware parts including carriage bolt, concrete screws, spring washer, self-tapping screws, rivet nut, self drilling screws, drywall screws, hex bolt, automotive fasteners, clips fasteners and so on.