Mail and parcels sent to Shenzhen will face enhanced security checks from Nov. 1 to 22 as the city prepares to host the APEC summit, the Guangdong Provincial Postal Administration has announced. Items destined for Shenzhen will undergo X-ray screening or other necessary inspections. Shipments that fail to meet postal security requirements may be restricted from delivery. The administration warned that the measures could delay deliveries and advised online shoppers to check with sellers and plan purchases accordingly