Nianzhen007

Welcome!

Hello, Nianzhen007, and welcome to Wikipedia. We appreciate encyclopedic contributions, but some of your recent contributions, such as your edit to the page Printed circuit board, seem to be advertising or for promotional purposes. Wikipedia does not allow advertising. For more information on this, please see:

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• Guideline on spam
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If you still have questions, there is a new contributors' help page, or you can . You may also find the following pages useful for a general introduction to Wikipedia:

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I hope you enjoy editing Wikipedia! Please sign your name on talk pages using four tildes (~~~~); this will automatically produce your name and the date. Feel free to write a note on the bottom of my talk page if you want to get in touch with me. Again, welcome! Constant314 (talk) 16:51, 27 September 2019 (UTC)

October 2019

You may be blocked from editing without further warning the next time you insert a spam link, as you did at Baby food. Persistent spammers may have their websites blacklisted, preventing anyone from linking to them from all Wikimedia sites as well as potentially being penalized by search engines. Clayoquot (talk | contribs) 17:55, 23 October 2019 (UTC)