Specifications

Features:
1) Excellent in performance and high-class product (B1 grade)
2) high resist to the wind

Features:
1) Excellent in performance and high-class product (B1 grade)
2) high resist to the wind pressure, flexible to open
3) Seal of good performance
4) Adopts pair seal, in the cannelure of the casement sealing strip, elasticity of the 
    sealing strip automatic under the wind pressure 
5) Defends rainwater to be permeability fine, makes rail adopt brood gauge level 
    ladder shape, slideway adopting dark ditch circling round type
6) Aesthetic in appearance, luxurious and natural
7) The smooth appearance has no seam, and all of the screw nails are hidden in the 
    body of extrusion-products