．Rigid Case: The case of the windows is made of stainless steel which can remain a strong material over a long period of time.

．Safety Lock: A user-friendly lock is installed with the window case. Users can easily lock the windows so that security can be enhanced.

．Multi-layer Design: The structure of the window case adopts a multiple-layer design which enhances the rigidity and reduces the net weight significantly. In addition, this multi-layer design can effectively act as a noise barrier which can ensure a silence indoor environment.

P.S.: The price may vary with the environment of the site. Final price would be set according to quotation.

＊High quality 5mm glass