One year multi business visit visa for HKSAR

I am a pakistani national running my own business in UAE Dubai since last 7 years, I have already travel to HKSAR three times on short tansit visa and double entry visa 14 days, I already enjoys One year multi visit visa for china, now i want to apply for one year multi business visit visa for HKSAR, to enhance my business and to make more easier for me to access to HKSAR market because some times I need to go urgently HKAR for IMPORTS to dubai, so please advise me how i can apply for this.