HK Post (香港郵政) is the EMS Operator in HK and it does not use 'EMS' in their name and brand their EMS delivery service using a different name, Speedpost.
The details of EMS operators can be found on the EMS website
https://www.ems.post/en/global-network
- described as gifts on the customs declaration
- for a birthday, anniversary or other occasion
- bought and sent between individuals (not companies)
- intended for personal use
VAT
You pay VAT on goods sent from non-European Union (EU) countries and EU special territories (eg the Canary Islands) if they’re:
- gifts worth more than £39
- other goods worth more than £15
- alcohol, tobacco products and fragrances (eg perfume, eau de toilette and cologne) of any value