China's State Post Bureau (SPB) said Wednesday that between August 20 and September 12 the real names of both receiver and sender must be submitted before packages and mail can be sent to the Tibet Autonomous Region, as part of a push for greater security ahead of September's major public events.

A series of celebrations will be held from August to mid-September to mark the 70th anniversary of victory in World War II and the War of Resistance against Japanese Aggression (1937-45), and events to celebrate the 50th anniversary of the establishment of the Tibet Autonomous Region will be held in Tibet in early September.

The circular stressed that people need to provide legal identification to both send and receive packages and also allow their parcels to be inspected.

Delivery companies can refuse to collect the parcels if senders fail to provide legal identification.

The SPB has sent notices to local postal authorities and express delivery companies asking them to ensure the security of courier services during the celebrations.

The authorities need to step up checks for illegal packages, especially for guns, flammable materials and explosives, illegal knives, hazardous chemicals and banned political publications, according to the SPB.

Postal companies need to closely monitor newsstands to prevent illegal political publications from being sold.