The differences between low-quality and high-quality products on AliExpress may be as follows:

1. Product quality: High-quality products are usually of better quality, may be made of higher-quality materials, have more sophisticated workmanship, and undergo strict quality control. Low-quality products may have defects, break easily, or have a shorter service life.

2. Functionality and performance: High-quality products usually meet higher functional requirements and have more stable and reliable performance. They may have better durability, efficiency, and user experience. Low-quality products may have limitations in terms of functionality and performance.

3. Brand and reputation: High-quality products often come from well-known brands or suppliers with a good reputation. These brands usually have a certain degree of popularity and reputation in the market, and consumers have a higher degree of trust in their products. Low-quality products may come from unknown or less reputable suppliers.

4. Customer reviews and feedback: Consumer reviews and feedback can reflect the quality of the product. High-quality products usually receive more positive reviews and satisfied customer feedback, while low-quality products may receive more negative reviews and complaints.

5. Price: Generally speaking, high-quality products may be relatively expensive because of their better quality and performance. However, price is not the only criterion for judgment, as low-quality products may also attract consumers with low prices.

To distinguish low-quality products from high-quality products on AliExpress, you can refer to the following points:

1. Check product descriptions and specifications: Carefully read the detailed descriptions, specifications, and functional features of the product to understand the quality and performance of the product.

2. Check customer reviews and ratings: Read other consumers' reviews and ratings of the product, which can provide important information about the quality of the product.

3. Pay attention to brands and suppliers: Understand the reputation of the brand and the credibility of the supplier, and choose well-known and reliable brands and suppliers.

4. Compare price and value: Price is not necessarily the only indicator of product quality, but too low a price may imply that the product is of lower quality.

5. Check product pictures and videos: Carefully view the pictures and videos of the product to evaluate its appearance and quality.

When buying products, taking the above factors into consideration can help you better distinguish between low-quality and high-quality products and make more informed purchasing decisions. At the same time, you should also pay attention to protecting your own rights, such as choosing sellers with a refund policy to prevent purchasing unsatisfactory products.