能源、原材料和运输需求缩减，钢材、电解铝等产品市场价格下降，产能过剩问题明显暴露。
Demand for energy, raw materials and transport shrank; prices of products such as steel and electrolytic aluminum fell; the problem of excess production capacity became apparent.
实践证明，两种控制模型对保证铸坯产品的计划优化、提高钢材收得率及提高铸坯产品质量等均起到很大的作用。
The practice proves that both models can play very important role in the optimization of the production plan and enhance the yield of steel products and slab quality.
保鲜盖采用304不锈钢材料，不含PVC等塑料有害物质，为目前最环保的保鲜盒产品。
Lids made of 304 stainless steel material, non-PVC plastic harmful substances, is the most environmentally friendly products.
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