When uploading products on Amazon, you need to fill in the product conditions. The specific contents are as follows:

1. New products: brand new products that have not been used or opened.

2. Second-hand products: products that have been used for a period of time but can be used again.

3. Refurbished products: second-hand products that have been repaired and tested and can be regarded as new products.

4. Defective products: products that are defective or damaged and cannot be used normally.

5. Collectibles: products with collection value, such as limited editions, rare products, etc.

According to the actual situation of the product, select the corresponding product condition to fill in. Filling in the accurate product condition can help buyers better understand the product condition, thereby increasing the success rate of sales.