1. Keep good indoor ventilation, keep the doors and windows in normal temperature and humidity environment, and prevent the doors and windows from deformation due to excessive humidity and temperature difference, and the metal accessories from showing corrosion, sealing edges, and the decorative materials from falling off. 2. In winter, the outdoor temperature is low. When using heating equipment, families should avoid heating objects being too close to aluminum alloy doors and windows to avoid deformation of doors and windows due to heat. 3. After the sliding doors and windows have been used for a period of time, the chute should be checked to ensure that the doors and windows can be opened and closed smoothly and flexibly. 4...
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