Propylene and ethylene are the major raw chemical materials for organic chemical industry, which are mainly derived from hydrocarbon steam cracking process.

丙烯、乙烯是重要的基本有机化工原料，且二者的市场需求日益旺盛，其主要来源是蒸汽裂解装置。

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Now China has another attraction for the energy-intense chemical industry: vast supplies of coal that can replace oil and natural gas as raw materials for chemical production.

现在中国对高耗能的化学工业来说又平添了一项吸引力：中国巨大的煤炭资源可以用来代替石油和天然气用作化工生产的原材料。

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The report says China was protecting its domestic manufacturers, by limiting exports of raw materials used in the steel, aluminum and chemical industries.

该报告称，中国通过限制钢铁、铝和化工等行业原材料的出口来保护国内制造商。

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The company has tweaked the chemical and atomic composition of the raw materials of the glass, which in turn has increased its density -- making it much more scratch and dent resistant than last years model.

ENGADGET: Corning demonstrates how strong its Gorilla Glass 3 really is (video)

The process started with 30 tonnes of raw materials and 500 tonnes of solvent and usually requires a dozen separate chemical steps and takes more than two years.

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