What are the differences between system doors and windows and broken bridge aluminum doors and windows?

the raw materials are different: the system doors and windows are made of some brands of aluminum, while some miscellaneous brands used for broken bridge aluminum doors and windows are synthesized with some brand materials.

the production process is different: the system doors and windows need to be glued, while the broken bridge doors and windows are all made of machinery, and no glue is needed at all.

accessories are different: the hardware accessories of system doors and windows are basically made in Germany, while the hardware accessories of broken bridge doors and windows are some miscellaneous brand hardware or domestic hardware.