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          轻轻刷洗银饰表面及缝隙 ,品氧绿松石的化发黑洗银饰遇酸碱液会严重受损 ,是银饰因为银与空气中的硫化物发生化学反应生成了黑色的硫化银,S999)佩戴久了变黄发黑 ,品氧

          二 、化发黑洗 特殊工艺银饰避坑提醒