过程工程师特别是中小型化工企业的工程师，经常要面对关于混合设备的选择、设计、放大和优化的问题。

Process Engineers, especially at middle or small scale companies, are often faced with the problems of mixing equipment selection, design, scale-up and optimisation.

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并设计调查问卷考察我国中小石油化工企业供应链现状，分析其存在的主要问题。

Next a questionnaire is designed and analyzed to recognize the supply chain status of Chinese petrochemical SMEs.

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