70mn弹簧钢弹性高扁簧圆簧发条气门簧0.15mm厚半硬冷轧蓝色带钢

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Qiangang Pocket Steel Co. Ltd.

Address:Guangdong Province, 471 Jian An-Chong Road, Metal Chief, Dong-Cheng City
Tel:13312988177

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13312988177