在订购时，请指定阀门通径和完整的产品规格型号，包括前缀和后缀，有关规格型号的含义请参阅下列网页中描述的常规项目及其说明。

Designate the valve size and the complete catalog number, including prefix and suffix letters, when applicable, to identify regular cataloged items as described on the following pages.

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跟进开发中产品的进度以保证项目按时完成，并确保其完整功能，可靠性，可生产性，并符合产品规格。制订项目进度表及情况分析报告。

Follow up all the product development process to ensure projects are on schedule, totally workable, reliable, producible and meet specifications. Provide schedules and status reports on the projects.

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