What is the fine-grained topic of the following text: This conference is a follow-up to the first in 2016 on the same topic with the objectives of sharing recent initiatives in R&D and national regulations on B&B; discussing successful models of scaling up B&B applications; and formulating strategic action plans to accelerate cooperation among Asian countries for B&B development. Only return the topic.
Follow-up conference on B&B development and cooperation in Asian countries.