Clarify the design Peculiarity and classification and USES of resilient-seated gate valve.
阑述了低压铸铁弹性阀座闸阀的设计特点、分类和用途。
The current product classification analyzed to put forward differentiation strategy, the new products develop to value the information collections with the process of stage-gate systems.
对现有产品分类分析提出了差异化策略，新产品研发重视信息收集和分层把关的过程。
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