Super thin led aluminum snap frame light boxPlace of Origin:China(mainland)Brand Name:GOOUNIONModel Number: ... , or your choice of RAL colours;10) Standard poster sizes A0, A1, A2, A3, A4, B1, B2 and custom sizes up to poster size of ... , bank, bus station, large exhibition project etc. Specifications:1. Aluminum snap frame diy led light box 2. Easy to change poster 3 ...