[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

锁体材质应选硬化钢(hardened steel)而非普通钢,硬化钢表面洛氏硬度可达HRC50以上,能显著增加锯切和钻孔难度;宣传仅写“合金钢”未标明硬化处理的需谨慎

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