在用的物料种类依赖，屏幕可能会改变巷道的声学特性。

Dependent on the type of material used, the screen may alter the acoustical characteristics of the roadway.

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发货前保证物料单的预算号，物料种类和项目名称正确。保证物料发放正确。

Ensure Budget no., material Category and project Code on materials Requisition Form are checked properly before materials are issued. Make sure materials are issued to the correct projects.

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注：我们建议客户根据运输物料种类，粒度极其磨耗性的大小等因素来选择不同厚度的盖胶。

Note: We suggest that the client should choose cover thickness according to the type of the conveyed materials, granule, magnitude of the abrasion and etc.

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