hsslss 发表于 2015-11-26 09:54

UL证书号YTSX.E25549前缀YTSX什么意思

UL证书号YTSX.E25549前缀YTSX什么意思

simonzhang 发表于 2015-11-26 10:10

是UL 的CCN。每一种产品都对应一个CCN。YTSX 这个CCN 涵盖的产品包括以下

This category covers electrically operated valves (designated as general-purpose valves or safety valves). Such valves that may be equipped with complementary or optional mechanical actuators are also covered under this category.

wuyueguang 发表于 2015-11-26 21:19

Control category number.
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