The paper analyses social & environmental engagement, stakeholders' relations, and CSR strategies/options along with their underlying mechanisms (predictors, mediators, moderators, and outcomes) of firms operating in China. It does this through the analysis of a unique case study using data collected from internal members and external stakeholders of the company. The results show that the company's resources and values can act as a mediator, their high visibility and scale can act as a moderator, and their self-regulation can act as a predictor in weak institutional contexts. Also, the findings show that employees' perceptions of visionary leadership can act as a mediator, and that the alignment in the vision/values/beliefs of the CEO with those of the shareholders can act as moderators. The paper intends to contribute to the CSR in China literature by (i) analysing a specific type of investor, Social Responsible Investor, neglected in the CSR literature, and (ii) by studying multilevel (individual/organisational/institutional) social & environmental engagement, stakeholders' relations, and CSR strategies/options in an evolving institutional environment. [ABSTRACT FROM AUTHOR]