Unverified85% confidenceDecision RuleTime unknown
沙材质优先选天然石英砂(SiO2)且经无尘水洗处理，粒径0.2-0.5mm手感细腻；避免选染色装饰砂，其色素易掉色且可能含重金属，长期接触有健康隐患
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85%
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Long-term
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