With the improvement of the social produce level and people living standard of substance and culture, the demanding of output and quality of paper production is at a high pitch.
随着社会生产和人们物质文化生活水平的提高，对纸产品的产量和质量要求越来越高。
With the improvement of the social produce level and people living standard of substance and culture, the demanding of output and quality of paper production is at a high pitch.
随着社会生产和人们物质文化生活水平的提高，对纸产品的产量和质量要求越来越高。
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