DHL Vs hk post
Recent month , freight to European country via HK post ( Registered Air Mail ) goes up , via DHL goes down . 

Delivery time 
Registered Air Mail 7-15 business days 
DHL 3-7 business days . 

Russia line , special service for Russian 
Freight via Registered Air Mail > Freight via Russia line . 
Delivery time approximately the same _ 7-15 business days 
Currier send the parcel to your location