Niu Qi Ba Screen uses black technology to use marketing scenarios such as coupon collection and lottery to allow customers to scan QR codes to participate in marketing activities and help merchants forward preset advertising videos without any sense, thereby achieving rapid promotion of the city's Ba Screen. Suitable for watching movies and karaoke, clothing accessories, office digital, beauty care, maternal and infant care, catering SPA, hair and nail salons, supermarket clubs, jewelry, bookstores and bookstores, home appliances and furniture, video games and fitness and other industries.