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Nano-scale silica sealant withstands 5000 thermal expansion cycles, and 304 stainless steel expansion anchors achieve 0.01mm micro-displacement control at the concrete/aluminum alloy interface. Passed the European Union CPR fire certification and ISO Class 4 cleanliness test, it provides atomic-level system reliability support for curtain wall joints and medical purification areas, so that the performance of the main parts is perfect within the millimeter boundary.