At present, the largest application market of sand and gravel aggregate in my country is: housing and new town construction, rail transit, highway, railway and other construction.

1. Housing and urbanization construction

Internationally, the sharp drop in housing prices is related to the rate of urbanization. When a country's urbanization rate exceeds 60%, a sharp drop in housing prices can occur. In the United States, the urbanization rate exceeded 70% when housing prices fluctuated; Japan’s housing bubble burst because the urbanization rate exceeded 67%; in Europe, the urbanization rate exceeded 65%.

The total population of mainland China is 1.36 billion, and the urban permanent population is 730 million. In 2013, the urbanization rate reached 53.7%. According to the national new-type urbanization plan for 2014-2020, the urbanization rate is expected to reach 60% in 2020. In the process of urbanization, the "three 100 million people" will bring about rigid demand for housing, and the investment demand brought about by this will be about 42 trillion yuan. 42 trillion yuan.

2. Urban rail transit construction

By the end of 2013, there were 19 cities with rail transit in the country, and it is expected that by 2020, the number of cities with rail transit will reach 50. According to the statistics of the National Development and Reform Commission, 36 cities have been approved for rail transit construction plans. In 2014, urban rail transit investment will reach 220 billion yuan, an increase of 40 billion yuan over last year.

At present, the construction cost of subway in my country is about 500-800 million yuan per kilometer, and the cost of light rail is about 200-300 million yuan per kilometer.

3. Highway construction

According to the national highway network plan, by 2030, the national trunk highway network will realize that the capital radiates to the provincial capital, inter-provincial multi-way connectivity, high-speed access to cities and counties, county and county national highway coverage, and provincial capitals and counties within 1,000 kilometers can be reached on the same day. It is possible to travel to and from prefectures and cities on the same day, and from provincial capitals in the western region to prefectures and cities on the same day. Important economic zones in regional central cities, traffic inside and outside the urban agglomeration, and coastal highways will also be connected.

4. Railway construction

Judging from the current plan, it is estimated that 20,000 kilometers of high-speed railway lines will be built in the next two years. In 2015, the "four vertical and four horizontal" high-speed railway network will be built, and the mileage of 120,000 kilometers will be completed, and it will reach 160,000 kilometers by 2020.

.172 major water conservancy projects

Li Keqiang presided over an executive meeting of the State Council on May 21, 2014, deploying to accelerate the construction of major water conservancy projects for water conservation and water supply. The meeting determined that during 2014-2015 and the "Thirteenth Five-Year Plan" period (2016-2020), 172 major water conservancy projects included in the planning will be constructed step by step. After the project is completed, it will achieve an additional annual water supply capacity of 80 billion cubic meters and agricultural water saving capacity of 26 billion cubic meters, increase the irrigation area to more than 78 million mu, and significantly strengthen my country's backbone water conservancy facilities system.

From the perspective of construction and investment plans, there will be a large demand for the sand and gravel market in the future, which creates favorable conditions for accelerating the rapid development of the sand and gravel aggregate industry.