Tianjin Yuhan Security Technology Co., Ltd. ee Tianjin Hedong District, yen ye kɔc ye ɣaac ku jɔl ya kɔc ye ɣaac ku jɔl ya kɔc ye ɣaac ku jɔl ya kɔc ye ɣaac ku jɔl ya kɔc ye ɣaac ku jɔl ya kɔc ye ɣaac. Company has been committed to the weak power security projects to constantly strengthen themselves since its inception, to provide technical support and pre-sales, after-sales services, to take the satisfaction of customers as our desires, to make our customers satisfied, we provide reliable software and hardware products and application solutions to our customers always adhere to "sincere cooperation, strive to advance, improve perfectly, strive to create technology, service enterprise's service purpose, with sincerity to communicate with friends across the world, together to create a smart community. Company consists of security, weak power engineering technicians, has had deep knowledge and rich practical experience, and to design, build a number of high quality security engineering and weak power engineering projects [enterprise purpose] self-improvement, good competition. appreciate each other, support each other. Lɔ̈k raan tueŋ ku jɔl ya luɔɔi ye looi në luɔɔi de käke luɔɔi de käke luɔɔi de käke luɔɔi de käke luɔɔi de käke luɔɔi de käke luɔɔi de käke luɔɔi de käke luɔɔi de käke luɔɔi de käke luɔɔi de käke luɔɔi Main Business: I, Building Communication System Non-Visual Building Communication System Color Visual Building Communication System Network Type Non-Network Type Visual Non-Visual Mixed Cloud Communication System II, Access Control One Carton Access Control System Card Password Access Control Reader Fingerprint Face Recognition Attendance Access Control Machine One door, two doors, multiple doors, networked access control controller, access control power, exit button, all kinds of electrical locks, shutters and other systems support products three, parking, unattended self-help system License plate recognition management system intelligent channel management system intelligent road gates straight rail gate arm door advertising road gates LED Display four, elevator five-party communication system old elevator plus and reform five-party communication system, new elevator plus five-party communication system, wireless elevator five-party communication system, wireless elevator three-party communication system five, elevator brushing system limited time limit sub-layer elevator brushing system six, monitoring system large, medium, small, type monitoring design construction seven, WIFI all covering public places WIFI all covering service process: telephone communication, site survey, program design and quote, signing contracts, site construction, completion acceptance, use maintenance training, after-sales service,