Teachers in schools do not provide envelopes with the school name and logo, but such envelopes are usually sold in school print shops.
Many graduates of Tianjin University are inconvenient to go back to their alma mater to prepare materials for studying abroad, so they entrust us to help them. We all buy envelopes at the print shop and ask the teacher to put stamps on them. We have bought them in Tianjin University, Tianjin University of Commerce, Tianjin Foreign Studies University and so on. If you need an envelope from Tianjin School, you can also ask us for it. We bought too many envelopes before, and now there are many more.