upvc balcony sliding door Specification: 1.Material: upvc profile with steel reinforcement. 2.Color: Co-extrusion/Laminated/Spay/Coating white,yellow,red,green,brown any colors request. 3.Glass: Hollowed glass/Toughened glass/Tint glass/Frost glass etc. 4.Various design can be chosed,and the design is fit to single glass or double glass. 5.Top quality with the beautiful and elegant appearance,with easy-to-clean,easy-to-operation. 6.High strength,corrosion resistance,anti-aging performance,sound and heat in solution,strong wind resistance and fine tightness.