主营产品：Liquid crystal touch all-in-one machine, electronic whiteboard, interactive touch control equipment, video display, center control, multimedia podium, blackboard, desks and chairs, drafting tables, iron beds, marking machines, etc.
主营产品：Decoration pollution prevention and control works, long-term indoor air purification, car air environment purification, home appliance cleaning and disinfection services, air purification machine rental and leasing
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Tengya video display
