Pls Inform me What processes do I need to follow up to get th visa for Hong Kong

Dear sir,
On June I plan to go to Hong Knog. My Husband(also a srilankan) is staying there. Last December he visited Hong Kong for under Sponsorship of Hong Kong Company (work permit). Already he is having visa until next December & his work place planning to renewal it for next years.

I need to go to stay with my husband in Hong Kong. So How can I apply visa for it. What Type it is? Pls Inform me the documents needed and What processes do I need to follow up.

Thanks
Ruwani