Aluminum-plastic co-extrusion is really low carbon environmental protection!!

Whether it is an aluminum-plastic co-extruded profile, if the color difference is obvious, it is not suitable to buy; Check the surface of the profile, there should be no depression or bulge; Aluminum avoid choosing profiles with open bubbles (white spots) and ash (black spots) on the surface, as well as cracks, burrs, peeling and other obvious defects; The thickness of the oxide film should reach 10 microns, and it can be gently scratched on the surface of the profile to see whether the oxide film on the surface can be wiped off.

Look at the assembly quality:
Switch repeatedly to check whether the switching force is too heavy; Whether the seal is firm; Hardware assembly is complete; Whether the lap amount of sash window frame meets the requirements (standard requirements casement window is not less than 6mm, push-pull window is not less than 8mm).

Look at the glass:
Whether it is hollow glass, there is no coating.
According to people's needs and new development trends, who can preempt the development of low-carbon economy, low-carbon technology and low-carbon industry, who can seize the strategic commanding heights in the competition of the 21st century.