Swimwear is a popular item worldwide and is sold in many countries. Some of the countries that are known to sell a high volume of swimwear include:

1. China: China is a major producer of swimwear, with many manufacturers and suppliers based in the country. Chinese swimwear is known for its affordable prices and fast turnaround times.

2. USA: The United States is a major market for swimwear, with many popular brands and retailers based in the country. American swimwear is known for its high quality and fashion-forward designs.

3. Brazil: Brazil is famous for its beaches and is a major market for swimwear. Many Brazilian swimwear brands are known for their bold, colorful designs and use of high-quality materials.

4. Italy: Italy is known for its luxury fashion brands and is a major market for high-end swimwear. Italian swimwear is known for its sophisticated designs and use of high-quality fabrics.

5. Australia: Australia is home to many popular swimwear brands and is known for its beach culture. Australian swimwear is known for its practicality and durability, as well as its fashion-forward designs.

6. Spain: Spain is known for its beaches, and is a major market for swimwear, specially in summer. Spanish swimwear brands are known for their bold designs, bright colors and high quality.

7. India: India is a rising market for swimwear, with many suppliers and manufacturers based in the country. Indian swimwear is known for its rich colors and intricate designs.

8. Colombia: Produces high quality swimwear.

These are some of the countries that are known to sell a high volume of swimwear, but it is important to note that there are many other countries that also have a significant market for swimwear, such as France, UK, and Japan among others.

This text was created with the help of OpenAI