User talk:Thachhoang56

Hello, I'm Materialscientist. I wanted to let you know that I removed one or more external links you added, because they seemed to be inappropriate for an encyclopedia. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page, or take a look at our guidelines about links. Thank you. Materialscientist (talk) 04:40, 14 December 2014 (UTC)