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Oops ! Our English website is under development, we expect the development to be over by June , We highly regret the inconvenience caused.
Kindly bear with us and for enquiries please contact mail@xindingjx.com .
说明：经过表面发黑工艺处理，形成高强度螺栓，常用于钢结构工程之中。
材质：20MnTiB、35VB
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