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允大螺絲工業股份有限公司致力於高拉力螺栓, 螺帽(A-325.B7.B16.2H.F10T)U型螺栓, 黑皮六角頭螺栓, 岩栓, 基礎螺栓(TypeI, TypeL, TypeJ), 六角承窩頭螺栓, 特殊形狀螺栓等產品及服務。