有些分类为基础化学品(basic chemicals)和较高附加值化学品(value-added chemicals)，或将后者分为特殊化学品和所谓知识化学品(knowledge chemicals)。
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high-value-added chemicals 高附加值化学品
Founded in 1995, Planet Asia is a value added supplier of industrial chemicals, plastic resins, tubings and films for medical products; polymer products and pollution control systems.
新加坡环亚私人有限公司成立于1995年，是工业化学品、塑料树脂、医用级的管子和薄膜、聚合物产品和环保控制系统高附值的供应商。
The present situation of carbon dioxide used to synthesize and produce chemicals which are highly value-added is reviewed.
综述了近年来二氧化碳在合成及制备高附加值化工原料等方面的进展。
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