1. What is your age?

2. What is your gender?

3. What is your occupation?

4. Do you use e-cigarettes?

5. Which type of e-cigarette do you prefer?

6. What type of e-cigarette design do you prefer? (Select all that apply)

7. What puff capacity do you prefer for e-cigarettes?

8. What charging frequency can you accept for an e-cigarette?

9. Which features do you value most in an e-cigarette? (Select all that apply)

10. What are your preferred e-cigarette flavors? (Select all that apply)

11. What is your flavor intensity in sweetness preference?

12. What is your flavor in sourness intensity preference?

13. What is your flavor in cooling intensity preference?

14. Do you enjoy mixed flavors (e.g., fruit blends, fruit + mint, dessert + tobacco)?

15. Are you interested in seasonal or limited-edition flavors?

16. Would you like to try flavors inspired by different cultures (e.g., regional teas, floral scents, hookah-inspired)?

17. How do you typically learn about e-cigarette products? (Select all that apply)

18. Where do you usually purchase e-cigarettes?

19. What is your acceptable price range for disposable e-cigarettes?

20. In what situations do you typically use e-cigarettes? (Select all that apply)