To enjoy the branded aluminum system of your choice, you must also ensure the "good carpenter", ie the appropriate manufacturer who has taste, knowledge and experience. The manufacturer will faithfully apply the specified manufacturing methods and of course will use the certified components recommended by the aluminum company and only these.
To make sure you work with the right people.

Ask your local aluminum systems dealer for a reputable manufacturer.
Ask the manufacturer to show you his work.
Ask and learn from previous clients about the consistency and quality of his work.
Visit the workshop and its exhibition.
To all your questions and especially those related to construction problems, he should give you substantiated answers and should suggest cost-effective solutions.