Companies are integrated enterprises, the main core for the building or real estate, the provision of gravel, sand, brick machine, quarry and transport.
公司属综合性企业，为主要核心建筑或房地产，提供砂石、河沙、机砖、石矿及运输。
2
Phosphate knock-off core of scrap silica brick aggregate for steel castings has been developed with experiment method.