How to choose the LCD advertising machine cost-effective?

electronics has formed a "digital signage", "monitoring the monitor display", "multimedia touch", "the self-service terminal" four series of products, and will continue to be in "medical display" and "elevator IOT display" and "Wulian intelligent terminal" and other areas of development. Products include: LCD advertising machine, LCD digital posters, LCD monitor, DID large screen liquid crystal splicing wall, LCD touch interactive integrated machine, self-service terminal etc.. Of which: LCD advertising machine market share for 8 consecutive years ranked first. LCD touch interactive integrated machine has been widely applied in each big city high school and university. Independent development of DID large screen liquid crystal splicing wall series products and liquid crystal monitor products, widely used in public security, transportation, coal and other industries.