Welly is a digital service created by professionals in the international health and lifestyle adjustment field, including practicing doctors and certified nutritionists. It provides personalized vitamin supplementation recommendations. Users can complete a 10-minute online questionnaire, after which they receive a customized vitamin regimen based on their unique needs and lifestyle. The plan is detailed in stages, explaining when, how, and which vitamins the user should take. Users can directly order the recommended vitamins from the website and start服用 according to the plan, thereby improving the quality of life.