how to get Hong Kong tourist visa in Shenzhen

Dear. Your previous response helped me too much. I am writing to you regarding how to get Hong Kong entry permit in Shenzhen. Let me inform you that I am in Shenzhen at the moment and I checked the some sites and from my embassy as well that I need to have an entry permit before going to Hong Kong. I have multiple entry 1 year Chinese business M type. Can you please inform me from where I can get Hong Kong entry permit in Shenzhen? I am from Azerbaijan.. Thanks