Articles writing in German, Native Speaker Only

We are looking for high quality articles writing in German, we will give you the topics/keywords to write, all of them are general topics, we need to establish a long term relationship with you, we have a lot of projects in the next few months, but all projects will run through freelancer milestone payment only, if anyone want prepaid please do not bid. 1. The articles must be unique. 2. Some articles need to be SEO optmized, some don't. 3. Articles will be 300-500 words long, you must be able to deliver at least 2 articles per day, otherwise please do not bid. 4. Please bid for 10 articles (each article 300 words). Notice: 1) Please bid the lowest rate as you can, consider this as a long term relationship, we will have many German language articles for you to write via freelancer. 2) We will pick 3-5 people on this project, we need a lot of articles.