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Stainless steel double wheel swing nylon sliding window roller
Sep 26, 2017
Plastic steel window specifications, models should meet the design requirements, window quality and mechanical properties in line with the country's existing standards, and has a factory certification. Window wind pressure, air infiltration, rainwater infiltration three basic physical properties should conform to the current national standards for these three performance classification requirements and design requirements, and the level of the quality inspection report. The engineering design has no specific requirements for insulation and sound isolation performance.






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