Shenzhen chengtong Optoelectronics technology co.ltd, is profession in large LED displays, LED advertising screens , indoor and outdoor LED displays, in bulk different outdoor single color display , two basic color display, full color unit cabinet, power supply driver etc., accessories. manufacturer. are widely used in airports, stations, ferry ports, stadium, banks, schools, factories, posts, shopping malls, hospital, industry and commerce departments, tax administration, costomhouse, monitoring center, adverting and entertainment industry. If you have any inquiry, pls be free to contact with me, we will give your the best service and market competition price any time.