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GCr15 Bearing Steel Ball
GCr15 Bearing Steel Ball
440C Stainless Bearing Steel Ball
440C Stainless Bearing Steel Ball
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中环钢球厂

我们不断有效地改进生产工艺，始终遵循“质量是最基本的目标，追求创新技术以进一步发展”的原则。国家和国际产品标准依据：中国标准GB308-2002和美国标准AFMBA1989。

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