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 consistently engaged in the research and development of intelligent products.Our company has obtained the National Fire 3C certification qualification, with tests for smoke exhaust window wind resistance performance, air tightness, and water tightness.Wind pressure resistance: Meets National Standard GB/T 7106-2008, Grade 9Deformation Test: P1 > 2.0 kPa (L/150)Repetitive pressure testing: P2 = ±3.0 kPaLevel of inspection: P3 = ±5.0 kPaAirtightness Performance: Positive pressure meets national standard GB/T7106-2008, Grade 8Positive pressure uni...