It has professional design, equipment and technical strength such as design center, name and address information center, bill dealer letter production center and direct sales center, and is responsible for the design, approval, production, mailing and delivery of various postage envelopes, postage postcards, business letters, DM advertisements, various reports and personalized stamps.

With millions of domestic name and address information and advanced letter production equipment, it can provide full-service direct mail letters such as name and address information screening, letter internal printing, envelope design printing, envelope name and address printing, letter packaging, mailing, delivery and information feedback. It is a communication platform for the postal service to establish contact between enterprises, merchants and consumers, that is, to make the content and information you want to promote into letters and directly convey the information to the target customer groups through direct mail. Business letters are a very effective propaganda medium.

Make all kinds of bills and letters, such as electricity bills, telephone bills, medical bills, insurance policies, provident fund bills, traffic violation bills, bank account and credit card statements, exam transcripts, membership points sheets, etc. Units that need to inform the service object of the use or consumption details can use the billing service.