Yes, you can cut them in half because they are made of paper... However, cutting them in any way, is not recommended. They may leak at the cut point. I would not cut these training pads. Purchase the correct size or fold them to fit.
Since COVID19 hit everything is being held at various US ports. I don't think most people realize just how many things the US imports from China because of the cheap labor over there. Just look at WISH, I'd say 90-95% of their that are for sale come from China.