Unverified80% confidenceDecision RuleTime unknown
钩头材质决定安全性：PP塑料钩承重轮价低但寒冷环境（<0℃）易脆裂，金属包胶钩（钢芯外裹PVC）承重与耐候更佳，冬季或重载场景应选金属钩
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80%
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