PurposeValue appropriation and value creation are two sides of the same coin. How B2B seller’s value appropriation impacts customer relationship performance still remains an under-researched topic. This paper aims to probe into this question in the context of Chinese B2B markets.Design/methodology/approachThis study identifies two kinds of value appropriation, namely, competitive and non-competitive and then examines their impacts upon customer relationship performance, as well as the moderating roles of distributive fairness and procedural fairness, based on questionnaire survey among 273 Chinese B2B firms.FindingsThe authors find that seller’s competitive value appropriation has negative impact upon customer relationship performance, and this link is positively moderated by customer-perceived distributive fairness. Besides, non-competitive value appropriation by the seller has significant and positive impact upon customer relationship performance, and this link is positively moderated by customer-perceived procedural fairness.Originality/valueThe paper contributes greatly to literature of value management and industrial buyer–seller relationship. Managerial implications are provided for B2B companies operating in Chinese market to tackle with the tradeoff between appropriating sufficient value and retaining harmonious relationship with customers.