Supplementary Notes:  German hardware accessories: Such as HOPO hardware, which features an anti-falling design and high load-bearing performance, and supports inward opening and tilting functions.   Full 2.0 wall thickness: Mostly adopts a six-cavity structure design, with stronger wind pressure resistance.   Factors affecting price differences: Price fluctuations among different manufacturers are related to profile brands (such as Fenlv, Weierpusi, etc.) and additional services (such as installation, logistics).   This quotation is for a typical configuration; for details, please refer to the complete quotation sheet from Jiayu Doors and Windows suppliers.