加盖纯度检验证明的英文怎么说

加盖纯度检验证明的英文：
hallmark

This has been the hallmark of our company.
这是我们公司的品质证明。

Diversity is a hallmark of the renewable energy development.
再生能源发展的特点是多元化。

Attention to detail is the hallmark of a fine craftsman.
能工巧匠的特点是一丝不苟。

Diversity is a hallmark of the renewable energy development.
再生能源发展的特点是多元化。

The sense of guilt is the hallmark of civilized humanity.
犯罪感是文明人显而易见的标志。