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Shaanxi Aviation Hong Feng Precision Mechanical Tool Co., Ltd.
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主营产品: 石油设备螺纹规,螺纹规,石墨电极规,机械丝锥,螺纹滚压圆柱模具
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Graphite electrode used in the detection of taper thread plug gauge of internal thread
API
API
Graphite electrode used in the detection of taper thread plug gauge of internal thread
API
API
Graphite electrode used in the detection of taper thread plug gauge of internal thread
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