Building Material, Iron and Steel, Timber Timber Products and Plank, Plywood.

采购产品建材, 铁和钢, 木材,木材产品和厚木板, 夹板.

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Pressure in Beijing producing four million tons, the impact of the company's iron, steel, timber production.

北京地区压产400万吨, 影响了公司铁 、 钢 、 材产量.

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