Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
Types of jackets Ultra-light, lightweight functional outerwear: These jackets are so lightweight that they can be rolled up and carried in a ball, and the materials used in these jackets are almost perfectly adequate for fast marching, orienteering,…
the characteristics of the jacket The so-called professional waterproof means that whether you are sitting in a wet place or walking in a windy and rainy environment, it can effectively block the invasion of rain and frost and snow, so that water cannot…
Problems faced by LED traffic lights 1. The application of high-power LEDs has the advantage of greatly reducing the number of LEDs, but heat dissipation and cost are problems that need to be solved. 2. Although the light intensity index, electrical…
Characteristics of LED traffic lights 1. Good visibility: LED traffic lights can still maintain good visibility and performance indicators under harsh weather conditions such as continuous light, rain, and dust. The light emitted by the LED is monochromatic…
The color symbol of traffic lights Traffic lights consist of red, green, and yellow lights. A red light means no passage, a green light means passage is permitted, and a yellow light means a warning. Traffic signal lights are divided into: motor vehicle…
