①Look at the glass material: Choose a better double-layer vacuum tempered glass, even if it is broken, it will not hurt people, and the safety factor is high. If it is a hot summer and the outdoor temperature is high, the double-glazed glass can reflect the heat radiation and prevent the heat from entering the room, thereby saving a certain amount of electricity bills.
②Look at the aluminum material: High-quality profiles are good in strength, airtightness, and wind pressure resistance. Therefore, when purchasing, you should observe whether the surface and cross-section of the material are flat.
③Look at the track height: Optional high and low rails can play a role in preventing water ingress on rainy days; considering the safety of entry and exit, you can choose hanging rails or embedded rails, which are also conducive to cleanliness.
④Look at accessories: Because it needs to be opened frequently, the light and smooth opening will make people comfortable and no noise. A good choice of energy efficiency prevents the door leaf from swinging when it is pushed or pulled, has stronger resistance to wind pressure, and has almost no noise.