亚洲无码中文字幕在线,国产亚洲欧美日韩精品四区,国产va观看在线,看黄片视频视频黄片黄片视频

The width of the frame is 70mm, and the thickness of the section is 2.0mm.
The border connection is connected by 90 degrees of tenon and mortise.
You can do single open fan + fixed, double open fan, double open fan + double fixed and many other ways.
Glass notch (non pressure line) single glass width 12mm, hollow notch width 23mm;
The width of the narrow door fan is 30mm, and it is economical and practical.
0.9m x 2.2m standard gate per square consumable 6.176g;