1. Powerful ability to resist external strong wind: 9th grade of country standard, P3≥5.0KPa, the highest grade is 9th grade;
2. Strong ability to prevent rain from penetrating into building: 5th grade of national standard, ΔP = 500Pa, the highest grade is 6th grade;
3. Nice performance of sealing air on whole window system:
a. Standard, q1 = 1.0m3 (m2.b) q2 = 3.0m2 (m.b);
b. The highest grade is 8th grade;
c. Excellent performance to keep constant of room temperature: 10th grade of national standard, K = 0.9W/(m2.k) the highest grade is 10th grade;
d. Good capability to prevent sound transmission from either inside or outside:5th grade of national standard, the height grade is 6th grade;
e. Nice capability to prevent fire from spreading when building in on fire;

f. Opening styles: fixed, sliding, outward opening, inward opening, top hanging, tilt and turn;
g. Prevents to be broken in by strong force;
h. Designed for high-rise buildings;
i. Applied to regions where the insulation, heat insulation performance requirements are higher;
j. Leading the flow of sealant through sealant guide plate, increasing the intensity and sealing performance of window corner;
k. Using sponge foam composite EPDM to achieve dual sealing and ensure the sealing performance, increasing watertight, air tightness, reducing the opening and closing force;
l. Materials: Aluminum, thermal break aluminum, wood, aluminum-cladding wood;
m. Colors: Many kinds of customized colors, electrophoresis, anodized, powder spraying, fluorocarbon spraying, wood grain transfer, surface coating, silver white, white, bronze, champagne, golden, black, gray, green and wood grain color;
n. Glass types: double glazing, low-e glazing, vacuum glazing, bullet-resistant glazing, fire-resistant glazing, aluminum venetian blinds in the middle of double glazing;
o. Hardware: Chinese top brand or German brand;
p. Customized sizes are accepted;
q. Packing: Hard EPS, plastic sheet, carton, wooden box, pallets or iron shell.