Plastic window is how to do ah?
First make plastic frame, and then insert the steel inside, so called steel.
Plastic co-extruded profiles to achieve the integrated production of sealing strips and profiles, significantly improved the plastic doors and windows of the watertight, air tightness and anti-aging, anti-permeability, to overcome the steel doors and windows in the production process after the sealant There are shrinking, seams and other defects, not only for the steel doors and windows assembly business to save the assembly process and time, but also reduces the cost of materials, greatly improving the production efficiency.
