通过采用统计质量保证 Statistical Quality Assurance ; SQA
当被问到他对PRONAL产品的印象时，张总用几个关键词来进行了阐述：设计独特，质量保证，售后完善，物美价廉。
When asked about his impression of the PRONAL product, Zhang used a few key words to elaborate: unique design, quality assurance, after-sales improvement, affordable.
当他们用高质量保证橄榄油是新鲜的，橄榄显而易见的送到榨油厂。
The olives should obviously be taken there while they are still fresh to assure a high level of quality.
介绍了欧洲重负荷柴油机油的规格、欧洲和美国车用发动机油质量保证体系和欧美柴油机油规格的差别及原因。
The specification and development of heavy-duty diesel engine oil in Europe, quality guarantee systems of automobile engine in Europe and American were presented.
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