In Douyin Store, it may not be possible to combine three products into one product directly. But you can use the following methods to achieve similar effects:

1. Create a combined product: In the Douyin Store background, create a new combined product. Add these three products as sub-products of the combined product, and set appropriate inventory, price, SKU and other information.

2. Set coupons and discount activities: In order to attract customers to buy combined products, you can set coupons or discount activities. For example, 10 yuan off for purchases over 100 yuan, or give coupons for purchases of combined products.

3. Optimize the product details page: In the product details page, show the overall effect of the combined product and the characteristics of each sub-product. Through detailed descriptions and pictures, let customers understand the value and advantages of the combined product.

4. Marketing promotion: When promoting combined products, emphasize the cost-effectiveness, discount strength and overall value of the products. Use short videos, live broadcasts and other methods to show the usage scenarios and characteristics of combined products.

5. Customer service guidance: When customers consult, encourage customers to buy combination products through customer service guidance and suggestions. Customer service can emphasize the preferential policies and overall value of the combination products to increase the willingness to buy.

6. Limited time and limited quantity: Set a limited time and limited quantity purchase for the combination products to create a sense of urgency and increase the willingness to buy.

7. Give gifts: In order to further attract customers, you can give gifts related to the combination products to increase customer satisfaction.

Through the above methods, you can combine three products into one combination product for sale in Douyin Store. Pay attention to the accuracy of product information during the operation to avoid causing trouble to customers. At the same time, do a good job in marketing promotion and customer service to improve the sales effect of the combination products.