我们认为那些从自然中提取的资源其附加值为零。
To the resources extracted from nature, which are treated as zero.
而C5馏分作为一种宝贵的资源，可以生产一系列高附加值的化工产品。
As a precious resource, C5 fraction can be used to produce a serious of chemical products with high added value.
加大了尾矿综合利用的程度，并为二次资源开发、生产高附加值产品开辟了一条途径。
It not only strength the complex utilization degree of tailing, but also open up a path for exploit of secondary resource and product high added value production.
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