A car roof luggage box, also known as a roof cargo box or roof rack cargo box, is a storage container that is mounted on the roof of a car to provide additional space for carrying luggage, gear, or other bulky items. It is typically made of durable materials such as plastic or fiberglass and is designed to be weatherproof and secure.The vacuum forming process is the main technology to make car roof luggage box.The main plastic is by ABS vacuum forming. Car roof luggage boxes made by vacuum forming comes in various sizes and shapes, ranging from small and compact to large and spacious. They are usually secured to the roof rack of the car using mounting brackets or clamps and can be easily installed and removed when needed. These boxes are especially useful for people who need extra storage space for road trips, camping adventures, or any other activity that requires carrying a large amount of gear. They provide a convenient and secure way to transport items without taking up valuable space inside the car. When choosing a car roof luggage box, it is important to consider factors such as the size and weight capacity of the box, the compatibility with your car's roof rack system, and any additional features such as dual-sided opening or built-in locks for added security.The vacuum forming plastic provide high strength and durable for car roof box. Overall, the vacuum forming car roof luggage box is your best choice for storage usage when you move on long travelling.