Hi sir this is sameer mamun nationality of Bangladesh I'm working in saudi Arabia

Yes, it is possible.
If you go there for tourism purpose, those documents are needed: copy of your passport, a completed application form, a passport-style photo, bank statement, hotel reservation, flight itinerary, and your travel plan. Next, post your application to HK immigration department to apply for tourist visa which will cost HKD190 per person.
Usually, you should prepare at least USD100 per day when you travel to HK.
Here is the postal address:
Receipt and Despatch Sub-unit
HK Immigration Department
2/F, Immigration Tower
7 Gloucester Road
Wan Chai, HK