alt text is in Seo only effective it it just tels what we see, so if we see a car with 3 wheels the alt text should be "car with 3 wheels" or something like that. So its very important the alt text in our product images is correct, when people search the images in google they get the right content. Sometimes when you try a search phrase in google images you get the most strange results, so its important only to put short, and correct information.
I can imagine you want to put all the information about your shop :) But keep clean and stay clean in that way