Need someone to post into Facebook Groups to bring visitors to our website

I need someone who can post in Facebook groups for me to guide traffic to our website or pages. The group must be related to the following topics: 1. taobao 2. [login to view URL] 3. alibaba 4. import China 5. Wholesale 6. product Sourcing 7. business And there may be even more. I want the posts be designed and publish to those related groups to guide traffic to our website and further bring us registration and sales leads. You can post two or three posts per group depending on the group rules. I just want those who are familiar with this job and ever have experience on it. And you need to answer the following questions. If no answer is provided, we will just ignore your application. 1. Have you got experience of posting in Facebook groups? 2. If yes, what do you think is the most difficult part? This can be a long term job. We will analyze the data and ROI to see who is doing the best.