1 folding design, the open space can achieve the greatest extent, making the smooth flow of indoor and outdoor and  a wide field of vision

2 the load-bearing capacity of the bottom of the sliding system can be up to 180KG ,so that the entire fans push-pull smoothly, lightly and have no noise.

3 model cavity adopts diene propylene ethylene monomer (DPEM) sealing strip crash.,not easy to be aging, durable, to achieve a more complete sealing effect.

4 can be configured 5 +6 A +5 and 5 +9 A +5 double-insulating hollow glass, to achieve the best sound effects: anti-theft, high-performance of security; prevent heat transfering effectively, to achieve the best insulating properties