Content writer for 50 Product descriptions , each 250 words

Please read the content of my project carefully which save my and Yours time. All “automatic” messages and bids will be removed from the project right away and scam reported to freelancer.com. Please no bidders with no feedback. . Please only send samples of Your work from related projects. . . . I am looking for professional content writer who can write 50 product descriptions. Each description with total of 250 words, divided in 2 parts as described below : 1) Introduction with main features of the product – 150-170 words 2) “Conclusion / Why should You buy it ? “ – 80-100 words Products category : android tablets, e-books, mp3 mp4 players, cell phones. Each description must be : - written in perfect English (preference will be given to native English speakers, however, anyone is free to bid) - be 100% unique and original and pass Copyscape - not have any spelling, punctuation or grammar errors - SEO friendly with 3% to 4 % keywords density. I will provide keywords. - manually written- NO automated software - Completed articles must be delivered in a Text file or Word - All rights to the completed articles will be owned by me. Under no circumstance can the articles be distributed anywhere else once delivered. Please send writing samples only related to my project. Looking for long term relationship