3UNM is a well-known professional manufacturer of audio and video systems in China, specializing in the research, development, production, sales, and service of digital network public broadcasting systems, multimedia classrooms, high-definition video conferencing, central control systems, and remote education recording and broadcasting for many years. It is one of the earliest manufacturers in China, with years of accumulated market management philosophy and brand awareness. 3UNM has an independent research and development team, grasps the pulse of the market, improves its business philosophy, puts people first, wins with quality, works diligently, and stands out from the crowd, providing users with high-quality and advanced technology products. Each manufacturing production line implements standardized operations and provides comprehensive and timely after-sales service. 3UNM has achieved outstanding achievements in the research and development, production, and sales of intelligent public broadcasting systems. Main products: digital IP network broadcasting system, digital intercom broadcasting system, CNC broadcasting system, intelligent public broadcasting system, fire broadcasting system, broadcasting combined constant voltage amplifier, pure post stage broadcasting amplifier, broadcasting peripheral equipment, ceiling speakers, wall mounted conference speakers, indoor and outdoor sound columns, lawn speakers and other series of products. We also have smooth sales channels and a wide customer base. Agents and distributors are located in various provinces and cities across the country. The product is widely used in many fields such as safe cities, schools, hotels, campuses, parks, airports, stations, banks, prisons, factories, buildings, shopping malls, highways, coal mines, sports halls, hospitals, tourist attractions, public institutions, and entertainment venues. 3UNM has multiple intellectual property protections including domestic and international technology and appearance patents, software copyrights, trademarks, etc. It has also passed ISO9001 quality management system certification, ISO14001 environmental management system certification, CFF fire protection certification, and its products have passed China's 3C mandatory certification, EU CE certification, and US FCC certification. Any top brand in the world puts product research and development first, following the principle that products are the true concept, market-oriented, and based on consumer demand. They advocate the perfect combination of products and modern space, focusing on professional depth and detail design. Humanization, artistry, healthiness, and usability are the themes of product research and development. The company will continue to strive, based on the best technology, best service, best production, and best price