任何产品通常应包括三部份,其一是核心部份就是产品本身,其二是附属部份就是产品的包装,其三是延伸部份就是服务。产品的核心部份又包括两部份即由各项技术指标构成的内在质量和产品本身的重量,所以实际上产品的质量由四个部份组成。在这四个部份中产品的包装和重量是用户最为敏感也最易觉察到的问题,是导致顾客产生购买欲望的首要因素,在国际贸易中 Any product should usually include three parts, one is the core part is the product itself, the second is the subsidiary part is the product packaging, the third is the extension is the service. The core part of the product also includes two parts, that is, the inherent quality of the various technical indicators and the weight of the product itself, so in fact the quality of the product consists of four parts. In these four parts of the product packaging and weight of the user is the most sensitive and most likely to be aware of the problem is to lead the desire of customers to purchase the primary factor in international trade