Visa application for Thai citizen to DRC

Hi, I am from Thailand and I plan to go to DRC first week of Feb.
I understand that I have to apply for the DRC entry permit in Beijing so I plan to go to Beijing next week.
- My questions are how many days it takes to get the tourist entry permit if all the required documents are submitted?
- What is the cost (how much) for the tourist entry permit - for single and multiple entries and
- what documents required for the tourist entry permit aside from valid passport and photos

Your prompt reply is much appreciated.
Thank you