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Description:
bsp;Have steel liner, bad insulativity | Good insulation and security | ||
Durability
| Service life less than 20 years. Frangibility | Service life less than 20 years. Frangibility | Service life more than 30 years. Durability |
Cost
| Cheap but high maintenance costs | Expensive and high maintenance costs | Reasonable price
|
Commonality
| Over -20°C
| -20°C-40°C, in high temperature easy totransfigure. | -40°C-80°C
|
Social benefits
| High energy consumption, notenvironmentally-friendly window | Green product.
| Green product
|
