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G系列NGA/NGB/NGS/NGF/NGSW55/60/65/70/75-170替代米思米O形圈
替代米思米O型圈NGB/NGA/NGS/NGF/NGSW25 30 35 40 45 50 55 60
米思米密封圈NGANGBNGSWNGSK
替代米思米O形圈G系列NGA