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Key points for selecting doors and windows
Performance parameters: Pay attention to the air tightness, water tightness, wind resistance, thermal insulation, sound insulation, etc.
Performance parameters: Pay attention to the air tightness, water tightness, wind resistance, thermal insulation, sound insulation, etc. of doors and windows, and choose according to actual needs.
Material and process: Check the quality of profiles, accessories, and glass, observe the processing technology, such as the installation of sealing strips and the splicing of door and window frames and sashes.
After sales service: Understand installation services, warranty periods, repair response times, etc., to ensure the right to use.
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