十五年老供应商被换，只因一份90元的年货礼品

Core Insights - The article discusses the significance of small gestures, such as gift-giving, in business relationships, highlighting how they can impact trust and cooperation in the industry [4][15][20]. Group 1: Business Relationships - In the business world, relationships are fundamentally about balancing interests, and small gestures can have a significant impact on these dynamics [15][24]. - A sudden gift, such as a 90 yuan gift box, can be perceived as a lack of understanding or respect, potentially damaging long-standing business relationships [9][10][34]. - Trust in business can be fragile, and once it is perceived to be broken, it can lead to significant consequences, such as losing clients [24][25]. Group 2: Industry Dynamics - The article notes that the practice of gift-giving in business has evolved, with a shift towards transparency and fairness, moving away from traditional norms [32][33]. - Companies that fail to recognize the importance of maintaining established norms in gift-giving may find themselves in difficult situations, as seen in various industry examples [17][34]. - The competitive landscape is such that suppliers are willing to offer better prices and services, but long-term relationships are often prioritized over short-term gains [22][23].