Colombia has a moderate level of development in Latin America and has maintained continuous economic growth for over 10 years. In Colombia with a high degree of marketization, the international community is generally optimistic about its long-term economic development prospects. Colombia’s industry is dominated by manufacturing, in which mining is one of the local pillar […]

Brookhaven National Laboratory (BNL) is a United States Department of Energy national laboratory located in Upton, New York, on Long Island, and was formally established in 1947 at the site of Camp Upton. Research at BNL specializes in nuclear and high energy physics, energy science and technology, environmental and bioscience, nanoscience and national security. The 5,300 acre campus contains several large research […]

Access control and security systems are used to protect personnel and property, so the system and equipment itself must be safe. On the one hand, the telephone equipment should be able to prevent high and low temperatures, rain, radiation, electromagnetic interference and so on. On the other hand, the telephone and security system should also have […]

The prison telephone system plays an important role in the management of prisoners. Prisons usually install some Wall-mounted Vandal Resistance Prison Telephones to maintain the stability and use of the phone. Family communication by telephone can help prisoners to promote their ideological stability and peace of mind. Communication with the outside can also help prisoners’ emotional and […]

New Year’s day are coming soon, J&R thank you for your follow and support over the past year as well as wishing you and yours a happy new year.   Please be noticed that our company will be temporarily off for the holidays from January 01, 2021 to January, 03, 2021 and will resume regular operations on January, 04, 2021.   […]