... single glass, double glazing, or laminated glass, according to customer’s requirements. The glass can be Low-e, reflective, frosted, tinted ... 's requirement.(4) Hardware: High-quality made in China and Germany.(5) Feature: Modern type, heat-insulated, water-proof, air-resistant. Aluminum alloy ... .0-3.5 W / m2.K (the K valuefor ordinary aluminum alloy material is 140-1700 W / m2.K), can save 30-60 ...