No, all Hong Kong companies need to have a valid registered physical address. A PO BOX is not accepted.
Yes, you can be a secretary in your Hong Kong Company as long as you are a resident in Hong Kong and not the sole director of your Company.
No. You can incorporate a company in Hong without necessarily traveling to Hong Kong. It is not a mandate for a Hong Kong company to have a Hong Kong-resident director.
The process of registering a company in Hong Kong takes an average of one day.