steel structure window
1. energy saving.
2. sound insulation.
3.noise prevention.
4. dust-proof and water- proof.

 steel structure window

    The plastic steal doors are mainly made up of UPVC with a certain percentage of stabilizer, colorant,filler and Ultraviolet absorbent and so on. The materials are made into sashes and frames of doors by cutting, welding and screw connecting after they are squeezed out. After the fans and frames are equipped with sealing strips, wool tops and hardware items, etc.

steel structure window