- technical standard:
- It has: heat insulation, heat preservation, moisture insulation, sound insulation, fire prevention, waterproof, long heat preservation life and high shock resistance.
- Innovation and environmental protection:
- "Lignin" replaces phenol to prepare phenolic foam insulation material, which is non-toxic and pollution-free, and it ensures the durability of building construction technology and building design standards.
- High usage:
- The service life is up to 25 years. The self-insulating wall saves a lot of building insulation and maintenance maintenance costs. The self-insulating wall is beneficial to the country and the people.
- More favorable prices:
- Innovative products with similar quality and lower price than similar products.
Most of them are from the 1950s and 1960s
Or modified products.
Most are toxic and pollute the environment.