Shandong Xingmu Yuan Intelligent Technology Co., Ltd. specializes in the production and sale of intelligent electric ventilation window systems. Our product range includes: intelligent smoke exhaust window systems, intelligent ventilation window systems, electric window opener series, manual window opener series, fire linkage smoke exhaust window projects, and finished installation services. Since our establishment, we have been continuously researching and developing intelligent products.Our company's smoke exhaust windows are tested for wind pressure resistance, airtightness, and watertightness performance.Wind Resistance Performance: Meets National Standard GB/T 7106-2008, Grade 9Deformation Test: P1 > 2.0 kPa (L/150)Repetitive Pressure Testing: P2 = ±3.0 kPaCertification Level: P3 = ±5.0 kPaAirtightness Performance: Positive pressure conforms to GB/T7106-2008, Grade 8Positive pressure unit seam length air permeability average value: q1 = 0.2 m³ (m³/h)Aver...