Unverified85% confidenceDecision RuleTime unknown
工艺精致度看背面：优质胸针背面同样电镀处理无毛刺，扣针为不锈钢或黄铜（不易生锈），焊点平整无溢胶；镶钻款优选爪镶而非胶粘，胶粘钻半年内易脱落
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