What are the secondary companies of China Building Materials Corporation?

The company has the following contents:

1, China National Building Materials Corporation: It is one of the largest building materials enterprises in China and one of the largest cement producers in the world. The company's main business covers cement, glass, mining, new building materials and other fields, and has a marketing and service network including China, Europe, Africa, Asia and America.

2. China United Cement Group Co., Ltd.: It is one of the largest cement producers in China and one of the most competitive cement groups in the world.

3. Southern Cement Co., Ltd.: It is a large enterprise whose main business is the production and sales of cement products. The company's main products include cement, clinker and concrete, with 9 production bases and products all over the country.