The frame depth is 120mm, the wall thickness is 1.8mm-3.0mm, it adopts mechanical design, the principle of never deformation (the outreach load is up to 500kg), high-end hardware accessories, upper and lower copper double insurance anti-theft locks, safe and child-proof handles, with perfect The double-layer automatic drainage structure, unique core research and development, the window opens and closes smoothly, lightly and without noise, each window can be positioned, fully open, half open, push-pull and other multi-function opening methods.Different from the many advantages of other brands, the products are underwritten by PICC Property and Casualty Insurance Co., Ltd. Product Liability Insurance, which embodies professional innovation everywhere, just for you to get a more comfortable enjoyment; the product effect is accurate, and there is no blind spot in the specific exhibition hall to show the product experience. ; All staff members have undergone professional training before they start to work, and they are only allowed to serve you when they meet the standards. They are experienced and can answer your questions at any time; workers are crafted, dedicated to solving problems, focusing on research and development, and choosing full-opening windows for you to ensure escort.