调整和优化出口商品结构， 提高商品质量和附加值。
China will adjust and optimize the mix of export commodities, improve their quality and raise their added value.
在多数情况下供应商变更产品设计，采取新材料、新设备、新工艺是为了提高商品的质量和生产效率，对保证商品质量是有益的。
In most cases the supplier product design, adopt new materials, new equipment, new technology to improve product quality and production efficiency, to ensure the quality of the commodity is useful.
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