Features: 1) much more perfect appearance 2)elegant design 3)Easily opened, tightly closed, decorative, easy operation, low air and water infiltration, spacious feeling, good lighting effect Features: 1. Material: Adopt natural timber , such as larch, red pine, spruce, teak. They carry through finely process, for example, dehydration, degreasing, finger joint, integrated, Better preservative, ...