Wity concise and delicate appearance, the product features good heat insulation and sound insulation performance with big opening area. 

It adopts Yalian brand high-strength 6063-T5 Mg-Al-Si alloy profile made by Zhonglian, and is equipped with standard domestic quality slotted automatic lock, and is easy to operate with reliable quality; The product adopts EPDM composite foamed automotive grade sealing strip, which is soft, aging resistant and durable and has better sealing effect. 

Continuous bending and hollow double-sided automotive grade tempered glass, it is moisture proof, sound insulation and heat insulation with better safety performance. 

It is designed with high and low rails, which is convenient for drainage with excellent waterproof performance; the rail is inlaid with 304# stainless steel with smoother operation; It is applicable to the exterior window of dustproof and noise-proof space such as living room, balcony, kitchen, etc.