- Independent drainage system to drain away the water smoothly and 

  there will be no rainwater backflow.

- Select high-quality aluminum alloy profiles, with advanced surface 

  treatment technology , the structure of the whole door is firmer, more 

  durable and beautiful fashion 

- The hinge is installed on the side door, and the interlocking hardware 

  is fixed around the frame, it makes the door more stable and safer.

- These glass can be upgraded with laminating hollow glass, built-in 

  manual/automatic blinds, self-cleaning and other functions.