Question about tags in parts that are uploaded

Is it okay to put a manufacturer's website information as a tag in a part I create and upload? What about the website for the representative. The reason I ask is that on some parts we source from China, the websites are hard to find and determining who is the sales rep can be hard as well. It isn't that I'm trying to advertise for them or anything, but if you get the part and want to use it, it may be hard to get back to the source. I want to find out so that I don't violate the TOS. Thanks.

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