1. wooden doors and windows
Advantages: Insulation
Disadvantages: easy to cause fire, cross-sectional dimensions of large and small transmittance, outdoor painting perishable need maintenance, easy to deform, is not conducive to the ecological balance.
2. steel doors
Advantages: small cross-section, a large transmittance
Disadvantages: poor airtight, sealing well, deformation, especially in large areas of coastal salt spray, humidity of the southern region prone to corrosion.
3. steel doors
Advantages: energy, improve the indoor environment
Disadvantages: deformation, aging
4. Aluminum alloy doors and windows
Advantages: excellent overall performance (wind pressure resistance, water tightness and air tightness, decorative, durable good). Noise, heat, fire, corrosion, pollution, environmental protection, energy saving.
Disadvantages: the price is slightly more expensive than the average door a little, but - value for money.