The quality of the aluminum sun room determines its safety. The quality of the sun room must first be reflected in its structure. The structural fastness of the sun room determines the service life of the sun room. The aluminum alloy structure, the strength and wind resistance of the roof glass and aluminum alloy windows and doors must be based on safety.

As a well-known door and window manufacturer in China, DER Building doors and windows are of high quality, safe and reliable. All the spare parts for the production of doors and windows are imported from abroad, and the quality is ensured by the source.