Related data show that China is the largest market for doors and windows in the world. In addition to the traditional aluminum alloy door window, the development of plastic doors and windows is in full swing. According to the current market share of plastic doors and windows, about 175 million square meters of plastic doors and windows are about the construction task of about a year. However, China's plastic doors and windows industry is very large, but its output value is not high. The main reasons are the following three points.

The concept of consumption needs to be changed
At present, when Chinese buyers are buying a house, the main concern is the qualification of the developers and builders, the quality of the building, and less attention to the door and window buyers. On the one hand, it is due to the lack of knowledge of doors and windows. On the other hand, it is always thought that doors and windows are the appendages of the house, and the quality of the doors and windows has little influence. But abroad, there is a popular saying: housing is good, the key is to see doors and windows.
Property buyers in the United States often ask what kind of material and standard doors and windows are used by the builders. The price of 10 thousand yuan per square meter of commercial housing, in the matching door and window prices abroad is generally about 1000 yuan per square meter, and China is only about 300 yuan per square meter. This shows that the quality and level of doors and windows in China are generally low.

Malignant competition is serious
Because of the incomparable advantages of plastic doors and windows, plastic doors and windows are listed as one of the most important building materials in China. Therefore, in recent 10 years, the production and application of plastic doors and windows in China have made rapid development, but the development of overheating, resulting in a serious oversupply of the status quo.
At present, the annual market demand of plastic doors and windows in China is about 1 million 500 thousand tons, and the annual production capacity of plastic doors and windows has reached 3 million tons. The consequences of low price competition also lead to the loss of plastic doors and windows industry in China.
Du Zonghan said that although China's plastic door and window market share has been considerable, but compared with foreign developed countries, there is still a certain gap. According to statistics, the average market share of European plastic doors and windows is 40%, German plastic doors and windows market share has reached 54%, the United States has reached 45%. In terms of building energy consumption, the total energy consumption of residential buildings in China is about 3 times that of developed countries, the energy consumption of outside windows is 1.5~2.2 times of developed countries, and the air leakage rate of doors and windows is 3~6 times of developed countries. This indicates that the level of building energy efficiency in China is much different from that in developed countries.

The industry standard is disorderly
According to President Du, at present there is not a standard for door and window industry that is matched with house price, but usually the 5 big performance of doors and windows is anti wind pressure performance, air leakage performance, rainwater permeability, insulation performance and sound insulation performance. The qualified rate of door and window inspection is low.
Because, for most buyers, they do not have the ability, there is no means to the doors and windows of these 5 performance testing, and the country has no corresponding binding, so developers, builders in order to save costs, most of the doors and windows to do "article".