◆ Installation slope 15-90 ◆ The wood is made of high-quality Nordic pine wood, which has undergone 301 processes and testing procedures, including lamination, tenoning, punching, forming, polishing, anti-corrosion and termite prevention treatment, and painting. ◆ The surface coating of wood is treated with environmentally friendly water-based paint, and the coating is tightly bonded The cover plate and drainage plate adopt precision manufacturing technology and have undergone 1080 hours of salt spray experiment and ultraviolet radiation test. ◆ The center suspension shaft is a patented technology from Wellux, which has undergone 240 hours of salt spray testing and 100% safety testing The sealing system is composed of seven types of sealant strips, with built-in Nylon wires to enhance the strength of the sealant strips ◆ Glass configuration: 3+1.52+3 glue added on the inner side, 14.5mm argon gas in the middle, 4mm float glass on the outer side, and with self-cleaning coating