Hongkong Post Circular Service — this is an improved form of Occupant Mailing. The marketer can target his or her customers geographically and demographically, by selecting which district or residential block in which to drop promotional circulars. Hongkong Post will help you identify the right targets with sophisticated segmentation tools. The delivery cost is as low as 90 cents — cheaper than posting a 30g letter, which costs HK$2.0. Please
check for more details.