... years supplier 3.ISO,SGS certification 4.Canon Machine Bolt A: SpecificationMaterial:stainless steel, aluminum,carbon steelSurface Finish:nickel ... Jinri Metal Products Co., Ltd. is a good and professional manufacturer of bolt products. We provide high quality and ... , even better, other Bolt manufacturers. Therefore, Dongguan Jinri Metal Products Co., Ltd. will be a good manufacturing partner as ...