Extrapolating windows have become the preferred solution for high-rise small apartments to save space and safety, but targeted reinforcement of ventilation and load-bearing shortcomings is needed
Basic scenario: Choose the northern double-layer model (500 yuan/㎡ level), with a focus on inspecting the track drainage design;
Upgrade plan: Broken bridge aluminum reinforced guide rail+Low-E glass (over 800 yuan/㎡), balancing insulation and safety
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