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。

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There is no graded gravel bed to buy, transport, handle at the job site, and install.

没有分级砾石床的购买、运输、工作现场的处理和安装等问题。

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Mixture while mixing, transport, spreading and rolling process, analytical quality control methods to improve construction quality graded gravel.

同时在混合料拌合、运输、摊铺及碾压过程，分析质量控制的方法，提高级配碎石的施工质量。

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