... .19 inch Supermarket E-coupon AD Player--Bluetooth,3G 2.Color:Black 3.OEM and ODM are welcome Car Advertising Player Market ... Application Large or small supermarket, convenience store, etc Product Function 1. Send the E-coupons and ... time, appointed site, host unit info, etc. 2. Abundant Promotion E-coupons 3. Playing video, picture, rolling text, etc. on the ...