http://ijeponline.org/index.php/journal SCOPUS.COM en-US <p>Allows users to: distribute and copy the article; create extracts, abstracts, and other revised versions, adaptations or derivative works of or from an article (such as a translation); include in a collective work (such as an anthology); and text or data mine the article. These uses are permitted even for commercial purposes, provided the user: gives appropriate credit to the author(s) (with a link to the formal publication through the relevant URL ID); includes a link to the license; indicates if changes were made; and does not represent the author(s) as endorsing the adaptation of the article or modify the article in such a way as to damage the authors' honor or reputation. <strong><a href="https://creativecommons.org/share-your-work/cclicenses/#:~:text=CC%20BY,be%20given%20to%20the%20creator." target="_blank" rel="noopener">CC BY</a> </strong></p> editor@ijeponline.org (Editor-In-Chief) contactus@ijeponline.org (Publisher Assistant) Sun, 30 Nov 2025 00:00:00 +0000 OJS 3.3.0.6 http://blogs.law.harvard.edu/tech/rss 60 http://ijeponline.org/index.php/journal/article/view/1204 <p>This study investigates how carbon footprint labels and QR code traceability influence consumers’ willingness to pay (WTP) for food and beverage products in urban Vietnam. Using a discrete choice experiment with 400 respondents from Hanoi and Ho Chi Minh City, the research estimates both conditional logit and mixed logit models to measure the marginal value of labeling attributes. Results reveal that consumers are willing to pay 9.8 percent more for products with carbon labels, 7.2 percent for QR traceability, and 11.6 percent for third-party verification. When both carbon and QR information are presented together, the combined WTP rises to 15.3 percent, confirming a complementary effect between environmental and digital transparency. Heterogeneity analysis shows that consumers with higher income and stronger environmental concern demonstrate significantly greater WTP. These findings suggest that transparency mechanisms not only enhance consumer trust but also provide strategic opportunities for firms and policymakers to promote sustainable consumption in Vietnam.</p> Do Hai Yen, Phan Hoang Quynh Chi Copyright (c) 2025 Do Hai Yen, Phan Hoang Quynh Chi https://creativecommons.org/licenses/by/4.0 http://ijeponline.org/index.php/journal/article/view/1204 Tue, 04 Nov 2025 00:00:00 +0000