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Jinan Zunkai Materials Co., Ltd.
Ck45 Cold Rolled Steel Spring Steel 0.15mm 0.3mm Spring Sk5 Ck67 65mn Steel Strip 469hb Hardness
Ck45 Cold Rolled Steel Spring Steel 0.15mm 0.3mm Spring Sk5 Ck67 65mn Steel Strip 469hb Hardness
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Sample Price US $ 200
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