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免打孔胶贴产品在瓷砖缝隙、凹凸墙面或墙面有防水涂层处附着力大幅下降，此类墙面不应依赖免打孔方案，否则脱落风险高

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Unverified免打孔与承重不可兼得：吸盘/胶粘款可保护瓷砖防水层但承重弱且会脱落，打孔款牢固却破坏瓷砖防水需打胶密封孔位——真正需要支撑的场景务必选打孔90% similar Unverified免打孔胶粘款不建议贴在有防水涂层的乳胶漆墙、马赛克拼砖或凹凸文化砖上，附着力不足易脱落砸物；这类墙面只能打孔或选落地款89% similar Unverified租房或不愿破坏墙面，选免打孔胶贴款；但瓷砖美缝、大理石、乳胶漆墙面胶贴附着力差，此类墙面反而建议打孔更稳89% similar

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