The hardware structure of design aluminum windows that must bear force extremely strong, must open close agile, and should lap connect rigorous, have good air tightness and hydrophobic performance, hardware installation should be firm cannot appear hold the hand to shake phenomenon, can realize the effect that open close easily.  

Identify glass layering and sealant diagonal connection should be tightly connected.  First of all, the gap shall not be greater than 0.5mm, and the need for leveling can not have a concave convex feeling, and then the Angle of the 45 degrees of the aluminum group shall be flat and there shall be no uneven concave and convex blocking hand phenomenon, but also the relative gap is less than 0.5mm.