Combined exhibition, conference, business, catering, entertainment, etc. the expo center is a one-stop large-scale public construction, mostly invested by government agency and large firms. 

Along with economy globalization, the advancement or cities is perpetual, exhibition business is an important component of service industry. with the evolutionary progression and elevating optimization of national economic structure, exhibition business has become one of the symbols to measure the accessibility, level of active and potential for development. Most of the cities nowadays have their own expo center, with unique local style and customs, that help the popularity and reputation of the cities, all of which originated from expo center. The construction of expo center is divided to indoors and outdoors, and it is composed of showroom, conference rooms and Site seeing halls. Longjoin can customize quality audio system to meet the exhibition demand, enable the full performance of exhibitors to realize a quality display and festive atmosphere; on the other hand, amplification design is applying a more practical approach, supporting the demand of multiple conference room and commercial center, this way enables a high-def, authentic audio effect, extending exhibition effects, increasing commercial value, thus a better experience for exhibition as a whole.

With such opportunity and challenge right in front, Longjoin is ready to dedicate more to bring classics yet quality products, professionalism, considering service and team to their clients, to distribute quality to every corners in the exhibition center, let sound tell the tale of the proud city.