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304不锈钢轻型弹垫QJ2963.3
QJ2963.3-1997 轻型弹簧垫圈1Cr18Ni9Ti 321 M1.6M2M2.5M3M4M5M6
304不锈钢GB/T859轻型弹垫QJ2963.3波形弹簧垫圈M2M3M4M5M6M8-M16