Waterproof telephone belongs to the special telephone category of fixed-line telephone. According to the use environment and strength, it can be divided into two categories: consumer waterproof telephone and industrial waterproof telephone. The JR100 series telephones are fully contained within a corrosion-resistant cast aluminum weatherproof case with a door providing complete protection against dust and […]

What role does the underground gallery play in the city? A comprehensive pipeline gallery is a tunnel space built underground in the city, and various engineering pipelines such as power, communication, gas, heating, water supply, and drainage are integrated into one. It is a modern, scientific and intensive urban infrastructure, which can effectively solve the […]

1. The application of the explosion-proof phone The explosion-proof telephone was originally developed for coal mines and other inflammable and explosive places, generally used in factories and mining enterprises of the second type of places. The explosion-proof telephone adopts a protective element and safety barrier to ensure the reliability of safety spark performance. Its ring […]

What is an American Summer camp? Summer camp originated in the United States in 1861, the original purpose is to let modern city children away from big cities and return to nature, and outdoor life through a variety of activities and exercises, to become tough, brave, and correct behavior. As time goes by, the content […]

Recently, the 48th Geneva International Exhibition of Inventions closed in Geneva, Switzerland, and announced the list of winners. Founded in 1973, the Geneva International Exhibition of Inventions is an annual large-scale international exhibition organized by the Swiss Federal Government, the Canton of Geneva, the City of Geneva, and the World Intellectual Property Organization. It is […]