Graz-Karlau Prison Graz-Karlau Prison is located in Gries, the 5th district of the city of Graz, capital of the Austrian state of Styria. With a capacity of 552 inmates, Graz-Karlau is the third-largest prison in Austria. Women’s Prison Schwarzau Schwarzau Prison is the only criminal institution in Austria responsible for the execution of judicial custodial […]

J&R technology will participate in the Xinjiang Petroleum Equipment Exhibition from July 18 to 20, 2023, Beijing time. The oil and gas industry is not only an important pillar of Xinjiang’s industry, but also plays an irreplacable role in ensuring national energy security and serving the construction of the “Belt and Road”. With the in-depth […]

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 […]