they also mis-identify OLD stock tubes, making basic mistakes like asserting that philips-labelled EI yugoslavia tubes, of which they sent me several pics clearly showing EI yugo codes, are really philips. https://www.tubedepot.com/products/7dj8-pcc88
Just FYI, cey, Phillips was a Dutch conglomerate that owned many brands of tubes and would often put one factory's label on another factory's tube. They would also brand tubes from factories they owned as Phillips. EI was owned by Phillips. Here is a link to the codes for all the various brands and factories Phillips owned: