All the tra mi ion axle and rollers are made of high-quality steel with high-precision dynamic balance, plated with rigid chrome and grinded surface.
2
所有传动轴、辊材质均为优质钢，高精度动平衡校正，镀硬铬、表面研磨。
All the transmission axle and rollers are made of high-quality steel with high-precision dynamic balance, plated with rigid chrome and grinded surface.
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