Zheng Y, Huang Y, Xia Z, Wang W. Research on the Optimization of Marketing Strategies for Valve Enterprises in the Context of Digital Transformation: A Case Study of Wenzhou Dingjin Valve Co., Ltd. FEM [Internet]. 2026 Feb. 12 [cited 2026 Apr. 19];7(2):52-8. Available from: http://fieam.org/index.php/ojs/article/view/194