Founded in 1992, LEELEN has always been rooted in the security industry and has strong independent R&D and technological innovation capabilities. At present, the comprehensive strength of the company ranks among the top three in China's intercom industry. It is the leading unit and leader of the drafting group of international standards for intercom. It is the drafting unit of national standards for intercom. It is a country with smart homes and smart communities. Standard editor-in-chief. With high-quality product quality and a complete after-sales service system, LEELEN has reached strategic cooperation with more than half of the top 100 real estate companies, including leading developers such as Vanke, Sunac, and Country Garden.

As the country vigorously develops the construction of smart cities, as a basic component of smart cities, smart communities and smart homes have also ushered in a new round of development opportunities. As a communication bridge between the community and the family, the intercom of the building has a natural entrance attribute and is an indispensable part of a smart community and a smart home. As an innovative company that keeps up with market development, LEELEN, driven by the new model of "Internet +" economic development, has extended the industry from building intercom to the field of smart communities and smart homes, and has developed diversified developments. Its products and solutions have realized the integration of building and apartment intercom, video surveillance, smart parking, smart home and other systems, greatly improving the application scope and value-added space of the building and apartment intercom system.