物流運貨 around RMB1.5-2/kg. But it is rather slow, at least 3-4 days to arrive Hong Kong. You need to collect at the station in Hong Kong, mostly Kwai Chung or 觀塘. If you want to delivery to home, you may pay additional fee, depend on company the delivery fee is $0.5/Kg + handling fee (~$10-$30, depend on company as well).
If you want to deliver in sub-bill to different location, there will be additional charge. Bear in mind, the goods must be collected / delivery out within 7 - 30 days, otherwise there will be additional inventory fee.