In order to reduce energy consumption, thereby reducing environmental pollution and greenhouse effect, after the 1970s, foreign countries generally paid attention to the production and application of thermal insulation materials in buildings. Since entering the 21st century, the global building insulation material market is developing rapidly. As North American consumers increase their awareness of building energy efficiency and the government’s tightening of building energy efficiency regulations, the proportion of new buildings in North America using insulation materials is increasing. Although affected by the financial crisis, the North American building insulation material market will shrink in the short term, but in the long run it still exudes a strong sense of warmth. The foreign thermal insulation material industry has a long history, and thermal insulation materials for building energy conservation account for the vast majority. For example, since 1987, building thermal insulation materials accounted for about 81% of all thermal insulation materials in the United States. Cotton products are used for building energy saving. Some developed countries in foreign countries have already started building energy-saving work as early as the late 1970s, forcing the construction industry to implement energy-saving standards in new buildings.

 The United States promulgated the ASHRAE (American Society for Heating, Refrigeration and Air-Conditioning Engineering) 90-75 energy-saving standards for the design of new buildings for the first time in 1975. Based on this, in December 1977, the government officially promulgated the "Energy Conservation Regulations in New Building Structures", and significant energy conservation effects have been received in 45 states. The National Energy Administration, the Bureau of Standards, and the National Building Code and Standards Conference continue to propose new content in terms of building energy-saving design, and the ASHRAE standard is revised every 5 years.

 Developed countries have attached great importance to building energy efficiency and have taken some effective measures, which have achieved great results and have greatly reduced the energy consumption of buildings in these countries. For example, in 1985, the heating area in Denmark increased by 30% compared with 1972, but the heating energy consumption was reduced by 3.18 million tons of standard coal, and the proportion of heating energy consumption in the total energy consumption in the country also dropped from 39% to 28%; The implementation of energy-saving standards has saved a lot of money so far. It is estimated that by 2011, another 43 billion US dollars will be saved on this basis.

 It can be seen that foreign building energy conservation laws and regulations have achieved significant social and economic benefits over the past 30 years. Building energy efficiency is not only dependent on the promulgation and implementation of building energy efficiency regulations, its realization also involves a large industrial group, of which thermal insulation materials and products are an important factor affecting building energy efficiency.