户对产品实用性的认定 perceived utility
那些产品可能是从一个完全不考虑安全性和实用性的厂家生产出的，那些牙刷的材质很可能是次品甚至会有害。
The product could be from a manufacturer who doesn't care about safety or efficacy. The toothbrushes could be made of inferior or even unsafe materials.
M：那我希望知道知道你们产品的实用性以及销售模式，如付款方式、运输、折扣等等。
M: Then I'd like to know your availability of the products and the terms of sales, such as mode of payment, delivery, discounts, etc.
“实用新型”是指对产品的形状、结构或组合所提出的具有实用性的新技术方案。
Utility Model "means any new technical solution relating to the shape, the structure, or their combination, of a product, which is fit for practical use."
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