High-density black glue coating, as one of the core technologies of this automatic three-fold sun umbrella, its research and development process embodies the wisdom and sweat of many scientific and technological personnel. The coating uses advanced synthetic resin materials such as polyurethane or polyester, and is processed through a precise coating process to form a tight and uniform protective layer. This protective layer not only has a deep color, but also contains powerful sun protection technology, which can effectively absorb and reflect most ultraviolet rays (UVA and UVB), ensuring that users are protected from direct sunlight.

In terms of durability, the high-density black glue coating also shows extraordinary strength. First of all, the coating has excellent wear resistance, which can resist friction and scratches in daily use, and keep the umbrella surface smooth and flat. This means that even in bad weather with wind and rain, users do not need to worry about the umbrella surface losing its sun protection effect due to wear.

High-density black glue coating has excellent anti-aging properties. After long-term exposure to sunlight and air, the coating of many sun umbrellas will gradually fade or peel off, thus affecting their sun protection effect. However, the high-density black glue coating of this automatic three-fold sun umbrella can effectively resist the erosion and oxidation of ultraviolet rays and maintain long-term sun protection performance. After professional testing, the coating still has a significant sun protection effect after years of continuous use, providing users with long-lasting protection.

Double protection of waterproof and sun protection
In addition to excellent sun protection performance and durability, this automatic three-fold sun umbrella also has excellent waterproof function. The umbrella surface is made of high-density fiber material, combined with the waterproof characteristics of the high-density black glue coating, so that rainwater slides quickly on the umbrella surface and does not penetrate into the umbrella. This design not only ensures that users can enjoy dry shelter on rainy days, but also further extends the service life of the umbrella surface.

Automatic opening and closing, convenient and efficient
In addition to sun protection and durability, this automatic three-fold sun umbrella also uses advanced automatic opening and closing technology. Users can quickly open and close the umbrella with just a touch of a button. This design not only simplifies the operation steps and improves the efficiency of use, but also avoids the damage that may occur when traditional umbrellas are opened and closed manually. At the same time, the three-fold design makes the umbrella small and easy to carry and store after folding. It can be easily placed in a backpack, handbag or car.

In terms of appearance design, this automatic three-fold sun umbrella also focuses on the combination of fashion and personality. The umbrella offers a variety of color options, from classic black and white to bright blue and green. These colors not only meet the personalized needs of different users, but also make the sun umbrella a fashion accessory. Whether it is paired with casual wear or formal wear, it can show a unique charm.