[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

施工前旧缝或瓷砖缝内的残胶、灰尘、水分必须彻底清除并干燥,否则任何防霉填缝剂都会因基层带菌/带水而快速返黑,防霉性能的发挥50%取决于施工前处理而非产品本身

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