发布时间:2025-02-07 19:00:11
阳树脂一般能用10年,阴树脂能用6-8年,不可能在短短的一二年就失效,要进行水质分析和树脂性能测试才能确定具体原因和解决问题的技术措施,一般脂发黄,甚至变黑,树脂是就已被污染了,还有5分给我啊谢谢
芳华505缝纫机的金属勾盘和放梭芯的黑色塑料分离导致不能使用才用了两次店家不保修上海哪里能修理
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