First, you need to determine your target customer group and determine the product category you want to sell based on the needs of the customer group.

Second, you need to determine the price and quantity of the products you want to sell, as well as the quality standards of the products based on market conditions.

Finally, you need to determine the model and color of the products you want to launch based on the characteristics of the products and the preferences of the customer group.

In short, selecting products on Amazon is a complex process that requires consideration of many factors. If you want to succeed, you need to study and understand the market more and make appropriate decisions.