Huaibei can probably print advertisements. The printing house knows one. There is a welfare printing factory in the east of Chaoyang Hospital (don't go to Minmetals, don't get off the road, probably near the platform of 1 bus weather station). I forgot my phone number. It is easy to find. You can find it by taxi. Ask the driver before you get on the taxi. If you don't know, don't take his car. You can also take a car to ask a nearby shop.