User talk:2600:1700:E130:1A50:E107:3FF9:5A39:913D

Recent edit to Tungsten carbide
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Tungsten carbide, but you didn't provide a reliable source. It's been removed for now, but if you'd like to include a citation and re-add it, please do so! If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you!  CatcherStorm    talk   11:20, 28 January 2019 (UTC)