The first aluminium alloy type was sold in 2009, the first aluminium alloy bathing door in 2014, the first autonomous aluminium alloy window in 2016, the first brand in 2017, and the full introduction in 2022 of the “comprehensive production” into the manufacturing process, turning the brand into a “minimum rice” in the doors. This is the history of the development of the penitentiary window and of the victory of the director of the company. In the eyes of the 85th door-to-doors, the window m...