Brand stretching or brand extension is when a company uses an existing brand name for new types of product.

品牌延伸或品牌延伸是指公司将现有品牌名称用于新型产品。

Brand stretching can lead to brand dilution, making the brand less powerful, and thus can damage the core – main – brand.

品牌延伸会导致品牌稀释，削弱品牌的影响力， 从而损害核心——主要——品牌。